Major interaction on record — check this product against your medications before combining. Based on 20 of 26 ingredients. Check your meds →

Dietary supplement

Ultra Anabolic Ingredients & Drug Interactions

Q: Does Ultra Anabolic by Douglas Laboratories interact with any medications?

Yes. Based on its ingredients, Ultra Anabolic has a known interaction with 1,063 medications, including 10 rated major. Use the checker to see how it interacts with a specific drug.

Q: How can one product interact with so many drugs?

Ultra Anabolic contains 26 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is responsible.

Q: Where does this information come from?

The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.

Q: Does this product have any ingredients without interaction data?

Yes. We could not check interaction data for phosphorus, L-leucine, L-valine, PABA, or niacin/niacinamide in this product. That doesn't mean they're safe or unsafe with your medications—just that we don't hold monograph data for them. Your pharmacist can help research those.

Q: Is folic acid safe in this supplement during pregnancy?

Folic acid at standard prenatal doses is recommended during pregnancy to help prevent birth defects. However, some research has noted a link between folic acid use late in pregnancy and increased childhood asthma risk. Talk with your obstetrician about whether this product is appropriate for you at the dose it provides.

Q: What are the most common side effects of the ingredients in this product?

At normal doses, most ingredients are well tolerated. Folic acid at higher doses can cause confusion, sleep disturbances, and nausea. Zinc and iron commonly cause nausea, diarrhea, and abdominal upset. Choline may cause a fishy body odor. Amino acids like tyrosine and phenylalanine can cause headache, nausea, or heartburn.

Q: Can I take this product if I have kidney disease?

This product contains potassium, which can build up to dangerous levels in people with kidney disease. Do not take it without your doctor's approval and guidance, especially if your kidney function is reduced.

Q: Is tyrosine in this supplement safe if I'm pregnant or breastfeeding?

No. There is not enough safety data on tyrosine supplements during pregnancy or breastfeeding, so they should be avoided unless your doctor specifically advises otherwise.

Q: Why does the product have so many ingredients?

Ultra Anabolic is formulated as a comprehensive amino acid and micronutrient blend, likely intended to support muscle protein synthesis and metabolic function. The specific rationale for each ingredient and dose should be discussed with your healthcare provider to determine if it's appropriate for your needs.

by Douglas Laboratories

See full label image

Capsule Category: Other Combinations

Most serious interaction: Major

Clinical methodology reviewed by Dr. Brian Staiger, PharmD, BCPS · Updated Sep 16, 2026 · Label data from the NIH DSLD

What is this page for?

First and foremost: checking Ultra Anabolic against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Major

Ultra Anabolic is a dietary supplement by Douglas Laboratories with 26 active ingredients. Its ingredients are commonly taken for preventing neural tube birth defects, treating or preventing folate deficiency, supporting pregnancy health.Based on those ingredients, 1,063 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Vitamin E, Chromium, Inositol. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Ultra Anabolic by Douglas Laboratories

Ask about any prescription or over-the-counter medication and we check it for interactions with Ultra Anabolic by Douglas Laboratories — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds

AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI

Prefer a human? Send your question to our licensed pharmacists — free, answered by email within 24 hours.

HelloPharmacist Scorecard of Ultra Anabolic by Douglas Laboratories

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 11, 2026

What’s inside

Full disclosure

Ingredient Transparency · database check

Full

Every active ingredient lists its own amount on the label.

Why this rating?

The label discloses an exact amount for 26 of its 26 active ingredients.
No proprietary blends here — you can verify the dose of every single component.

Ultra Anabolic contains 26 active ingredients, including several B vitamins (folic acid, thiamine, riboflavin, biotin, pantothenic acid, and niacin/niacinamide), amino acids (L-leucine, L-isoleucine, L-tyrosine, L-phenylalanine, L-valine, L-threonine, L-lysine), minerals (phosphorus, chromium, zinc, iodine, boron, iron, and potassium), choline, inositol, and vitamin E and vitamin K. The product also contains inactive ingredients: gelatin, cellulose, and vegetable stearate, which serve as the capsule material and binders.

Does it work?

Strong evidence

Evidence for Intended Use · database check

By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed

This product doesn't appear to be marketed for a specific use, so we graded its ingredients' overall clinical evidence instead.

Strong

Strong clinical evidence supports its ingredients for:

Anemia of chronic disease via Iron Effective
Folate deficiency via Folic Acid Effective
Hemorrhagic disease via Vitamin K Effective
Hypoprothrombinemia via Vitamin K Effective
Iron deficiency anemia via Iron Effective

Why this rating?

We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.
Since the label doesn't commit to one use, we graded the ingredients' overall clinical evidence instead.
On file: Anemia of chronic disease — rated "Effective" (Iron) (Natural Medicines).
On file: Folate deficiency — rated "Effective" (Folic Acid) (Natural Medicines).
On file: Hemorrhagic disease — rated "Effective" (Vitamin K) (Natural Medicines).
On file: Hypoprothrombinemia — rated "Effective" (Vitamin K) (Natural Medicines).
On file: Iron deficiency anemia — rated "Effective" (Iron) (Natural Medicines).

We hold effectiveness ratings only for some of these ingredients. Folic acid is effective for folate deficiency and likely effective for preventing neural tube birth defects and reducing methotrexate toxicity; it's possibly effective for depression and cognitive impairment.

Thiamine is effective for thiamine deficiency and Wernicke-Korsakoff syndrome. Zinc is effective for zinc deficiency and likely effective for Wilson disease; it's possibly effective for acne and age-related macular degeneration.

Iron is effective for iron-deficiency anemia and anemia of chronic disease. Vitamin K is effective for blood clotting problems.

Iodine is likely effective for iodine deficiency and radiation exposure. Boron is likely effective for boron deficiency.

For the other active ingredients in this product—amino acids like tyrosine, phenylalanine, threonine, and lysine; inositol; chromium; and vitamin E—we either hold no effectiveness data or the evidence is insufficient to rate them. The product's overall purpose as an 'anabolic' supplement is not addressed in our data.

The evidence, ingredient by ingredient Folic Acid Thiamine Riboflavin Biotin Tyrosine Inositol Phenylalanine Vitamin K

How safe is it?

Well-documented data

Safety Information · database check

Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?

We hold adverse-effect (side-effect) data for 20 of the 20 matched ingredients.
Pregnancy & breastfeeding safety ratings cover 20 of 20.
General safety write-ups exist for 20 of 20.
Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Folic acid at normal supplement doses is generally well tolerated and is recommended during pregnancy at standard prenatal doses. At higher doses (15 mg daily), it can cause confusion, sleep disturbances, and nausea; large doses may worsen B12 deficiency symptoms.

Thiamine is generally very safe orally, though oral use requires provider guidance in pregnancy and breastfeeding. Riboflavin is considered very safe; excess is removed in urine.

Biotin is generally safe even at fairly high doses. L-tyrosine is generally well tolerated in healthy adults but requires provider consultation before regular use, and is not recommended in pregnancy or breastfeeding due to insufficient data.

L-phenylalanine should be avoided in supplement doses during pregnancy and breastfeeding, and is contraindicated in people with phenylketonuria (PKU). Inositol is generally well tolerated with mild digestive side effects; safety in pregnancy is not fully established.

Zinc is well tolerated at recommended doses but can cause nausea, diarrhea, and metallic taste, and high long-term doses may cause copper deficiency. Iron is generally safe at recommended doses and often recommended in pregnancy under provider guidance; common side effects are gastrointestinal upset.

Chromium is usually well tolerated but high or long-term doses may pose risks; avoid high supplements in pregnancy and breastfeeding. Iodine is safe in normal dietary amounts but can cause thyroid problems at high doses; adequate iodine is important in pregnancy but avoid high-dose products.

Boron should be avoided in pregnancy and breastfeeding supplements due to potential harm. Potassium from food is safe, but supplements can cause dangerously high blood levels in people with kidney disease or those taking certain medications.

Choline is well tolerated in normal amounts but high doses (above 3.5 grams daily) can cause fishy body odor, nausea, and vomiting. Vitamin E at usual dietary amounts is safe; high doses increase bleeding risk.

L-lysine is generally well tolerated at typical doses.

Side effects, ingredient by ingredient Folic Acid Thiamine Riboflavin Biotin Tyrosine Inositol Phenylalanine Vitamin K

Meds to double-check

Major interaction found

Known Interaction Concern · database check

Major identified

At least one ingredient has a documented Major-severity interaction. Check your medications for a personalized result.

Why this rating?

16 of the 20 matched ingredients can interact with medications — Iodine, Lysine, Inositol, Choline, Phenylalanine, among others.
The most serious interaction on file is rated Major.
Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; immunosuppressants / transplant drugs; cancer treatments; diabetes medications; lithium; Parkinson's medications.
For scale: 1,064 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

If you take levodopa (Parkinson's medication), check before starting—both L-phenylalanine and tyrosine in this product can reduce its effectiveness, and this is Major-severity. Warfarin (blood thinner) users must check before adding this product because vitamin K antagonizes warfarin's effects—also Major-severity.

NMDA antagonists (certain psychiatric and pain medications) interact with L-threonine at Major severity. For Moderate-severity interactions, double-check before use if you take seizure medications (phenobarbital, phenytoin, primidone), cancer drugs (capecitabine, 5-fluorouracil, methotrexate, cisplatin), antidiabetes medications or insulin, thyroid medication (levothyroxine) or antithyroid drugs, blood-pressure medicines (ACE inhibitors or ARBs), antidiabetic agents, potassium-sparing diuretics, antibiotics (quinolones, tetracyclines, cephalexin), lithium, amiodarone, anticoagulants or antiplatelet drugs, HIV medications, or penicillamine.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with strong clinical evidence behind its ingredients' uses. Major medication interactions have been identified, and safety information is well characterized.

If you take seizure medication, blood thinners (warfarin), levodopa for Parkinson's, chemotherapy drugs, thyroid medication, or blood-pressure medicines, or if you have diabetes or kidney disease, you need to check your specific medications with our tool before taking this product. People looking for amino acid or mineral supplementation should discuss this product with their pharmacist or doctor, especially if they're on prescription medications or have chronic conditions.

The ingredient list is extensive, and safe spacing or timing may be needed with certain drugs.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 20 of 26 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Apr 26, 2012.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Ultra Anabolic, straight from the product label.

Brand	Douglas Laboratories
Net contents	120 Capsule(s)
Market status	On market
Date entered into DSLD	Apr 26, 2012
DSLD ID	8361
Product type	Other Combinations
Supplement form	Capsule
Dietary claims / uses	All Other
Intended target group(s)	Adult (18 - 50 Years), Dairy Free, Sugar Free

From the label

Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Ultra Anabolic by Douglas Laboratories, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):

Adults and children 4 or more years of age

Minimum serving Sizes:

1 Capsule(s)

Maximum serving Sizes:

4 Capsule(s)

Servings per container

Ingredient	Amount	% DV
Folic Acid	400 mcg	100%
Phosphorus	100 mg	10%
L-Leucine	110 mg	--
Thiamine	50 mg	3333%
Riboflavin	25 mg	1471%
Biotin	300 mcg	100%
L-Isoleucine	82 mg	--
L-Tyrosine	71 mg	--
Inositol	25 mg	--
L-Phenylalanine	65 mg	--
L-Valine	92 mg	--
Vitamin K	1 mg	1250%
Chromium	200 mcg	167%
Zinc	15 mg	100%
Pantothenic Acid	150 mg	1500%
Choline	24 mg	--
L-Threonine	62 mg	--
Vitamin E	400 IU	1333%
L-Lysine	80 mg	--
PABA	50 mg	--
Iodine	200 mcg	133%
Boron	2 mg	--
Niacin/Niacinamide	120 mg	600%
Iron	18 mg	100%
Potassium	99 mg	2%
Molybdenum	100 mcg	133%

Other ingredients: Gelatin, Cellulose, Vegetable Stearate

Tap any ingredient to jump to its full detail below.

Label statements

These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.

FDA Statement of Identity

A Dietary Supplement

Formulation

This product contains NO yeast, wheat gluten, soy protein, milk/dairy, corn, sodium, sugar, starch, artificial coloring, preservatives or flavoring.

Precautions

WARNING: Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6. Keep this product out of reach of children. In case of accidental overdose, call a doctor or poison control center immediately.

WARNING: This product contains Vitamin K, which interferes with the prescription drugs Coumadin and Warfarin. Do not take this product if taking either of these drugs.

TAMPER RESISTANT PACKAGE, DO NOT USE IF OUTER SEAL IS MISSING.

Storage

STORE IN A COOL, DRY PLACE.

General

Formula #7092

Suggested/Recommended/Usage/Directions

Suggested Usage: As a dietary supplement, adults take 1 to 4 capsules daily or as directed by your healthcare professional..

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Ultra Anabolic by Douglas Laboratories label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)

What’s inside

The Ingredients in Ultra Anabolic by Douglas Laboratories

These are the 26 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 Capsule(s) Dosage formCapsule Servings per container30 Amounts shown are per serving.

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

Folic Acid

Interacts with
40 drugs

400 mcg per serving

Folic acid is the man-made form of vitamin B9 and is one of the most well-studied supplements, especially for preventing serious birth defects when ta...

Folic Acid monograph & interactions

Phosphorus

100 mg per serving

L-Leucine

110 mg per serving

Thiamine

Interacts with
3 drugs

50 mg per serving Form: Vitamin B1

Thiamine (vitamin B1) is an essential nutrient your body needs to turn food into energy and to keep your nerves and heart healthy. Most people get eno...

Thiamine monograph & interactions

Riboflavin

Interacts with
20 drugs

25 mg per serving Form: Vitamin B2

Riboflavin (vitamin B2) is an essential nutrient your body needs to turn food into energy and to keep skin, eyes, and nerves healthy. It is generally...

Riboflavin monograph & interactions

Biotin

No known
interactions

300 mcg per serving

Biotin (vitamin B7) is a water-soluble vitamin your body needs to turn food into energy and to support healthy hair, skin, and nails. Most people get...

Biotin monograph & interactions

L-Isoleucine

82 mg per serving

L-Tyrosine

Interacts with
21 drugs

71 mg per serving

L-tyrosine is an amino acid your body uses to make brain chemicals like dopamine and norepinephrine. Some studies suggest it may help mental performan...

L-Tyrosine monograph & interactions

Inositol

Interacts with
86 drugs

25 mg per serving

Inositol is a sugar alcohol made naturally in the body and found in many foods, and it is sold as a supplement (often myo-inositol) mainly for PCOS, m...

Inositol monograph & interactions

L-Phenylalanine

Interacts with
16 drugs

65 mg per serving

Phenylalanine is an essential amino acid the body uses to make brain chemicals like dopamine and norepinephrine. Some people take it for mood, vitilig...

L-Phenylalanine monograph & interactions

L-Valine

92 mg per serving

Vitamin K

Interacts with
2 drugs

1 mg per serving

Vitamin K is an essential nutrient your body needs for normal blood clotting and to support healthy bones. Most people get enough from food, but suppl...

Vitamin K monograph & interactions

Chromium

Interacts with
178 drugs

200 mcg per serving

Chromium is an essential trace mineral involved in how the body handles sugar and fat. Some studies suggest it may modestly help blood sugar control i...

Chromium monograph & interactions

Zinc

Interacts with
67 drugs

15 mg per serving Form: Zinc Amino Acid Chelate

Zinc is an essential mineral that your body needs for immune function, wound healing, taste, and smell. Most people get enough from food, but suppleme...

Zinc monograph & interactions

Pantothenic Acid

No known
interactions

150 mg per serving Form: D-Calcium Pantothenate

Pantothenic acid is vitamin B5, an essential nutrient your body uses to turn food into energy. True deficiency is very rare because it is found in nea...

Pantothenic Acid monograph & interactions

Choline

Interacts with
16 drugs

24 mg per serving Form: Choline Bitartrate

Choline is an essential nutrient your body needs for liver function, brain health, and nerve signaling, and many people get enough from foods like egg...

Choline monograph & interactions

L-Threonine

Interacts with
3 drugs

62 mg per serving

Threonine is an essential amino acid your body needs but cannot make, so you must get it from food or supplements. Most people get plenty from a norma...

L-Threonine monograph & interactions

Vitamin E

Interacts with
764 drugs

400 IU per serving Form: D-Alpha-Tocopheryl Succinate

Vitamin E is an essential fat-soluble vitamin and antioxidant that most people get in adequate amounts from a normal diet. Supplements can help correc...

Vitamin E monograph & interactions

L-Lysine

Interacts with
1 drug

80 mg per serving

Lysine is an essential amino acid your body cannot make on its own, so it must come from food or supplements. People most often take extra lysine to t...

L-Lysine monograph & interactions

PABA

50 mg per serving

Iodine

Interacts with
7 drugs

200 mcg per serving Form: Kelp

Iodine is an essential mineral your body needs to make thyroid hormones, and most people get enough from iodized salt, dairy, and seafood. Supplements...

Iodine monograph & interactions

Boron

No known
interactions

2 mg per serving Form: Boron Amino Acid Chelate

Boron is a trace mineral found in many plant foods and sold as a supplement, mainly promoted for bone, joint, and hormone health. The human evidence f...

Boron monograph & interactions

Niacin/Niacinamide

120 mg per serving

Iron

Interacts with
80 drugs

18 mg per serving Form: Iron Amino Acid Chelate

Iron is an essential mineral your body needs to make hemoglobin and carry oxygen in the blood. Supplements are mainly useful for treating or preventin...

Iron monograph & interactions

Potassium

Interacts with
62 drugs

99 mg per serving Form: Potassium Phosphate/Chloride Complex

Potassium is an essential mineral your body needs for nerve signals, muscle function, and a steady heartbeat, and most people get enough from a balanc...

Potassium monograph & interactions

Molybdenum

No known
interactions

100 mcg per serving Form: Molybdenum Amino Acid Complex

Molybdenum is an essential trace mineral your body needs in tiny amounts to help certain enzymes work. Most people get enough from a normal diet, so s...

Molybdenum monograph & interactions

Other (inactive) ingredients: Gelatin, Cellulose, Vegetable Stearate. These complete the product’s ingredient list but are not active constituents.

HelloPharmacist.com · Pharmacist card

Ultra Anabolic

by Douglas Laboratories · label dated Apr 26, 2012

Scan for the full live report

Known drug interactions: 1,063 medications — most serious rated major

Active ingredients

Folic Acid, Phosphorus, L-Leucine, Thiamine, Riboflavin, Biotin, L-Isoleucine, L-Tyrosine, Inositol, L-Phenylalanine, L-Valine, Vitamin K, …

Most serious documented interactions

Benserazide, Levodopa — Major (via L-Phenylalanine)
Carbidopa, Levodopa — Major (via L-Phenylalanine)
Carbidopa, Levodopa, Entacapone — Major (via L-Phenylalanine)

Full interaction list, ingredient monographs & live checker: https://hellopharmacist.com/drug-supplement-interactions/supplements/ultra-anabolic-by-douglas-laboratories-181335
Printed · Educational information only — not medical advice. Confirm against the physical product label and with your pharmacist.

Interaction report

Ultra Anabolic by Douglas Laboratories Drug Interactions

Ultra Anabolic — Douglas Laboratories · HelloPharmacist interaction report
Active ingredients: Folic Acid, Phosphorus, L-Leucine, Thiamine, Riboflavin, Biotin, L-Isoleucine, L-Tyrosine, Inositol, L-Phenylalanine, L-Valine, Vitamin K, Chromium, Zinc, Pantothenic Acid, …
Source label: Apr 26, 2012 · Printed · HelloPharmacist.com
Educational information only — not medical advice. Confirm against the physical product label and with your pharmacist.

HelloPharmacist Interaction Report

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Clinical methodology reviewed by Dr. Brian Staiger, PharmD, BCPS · Last generated Jul 11, 2026

26 active ingredients 16 with known interactions 1,063 medications covered

Ultra Anabolic by Douglas Laboratories contains 26 ingredients, and we were able to check interaction data for most of them.

Several of the ingredients do have documented interactions with medications, and the most serious one involves L-phenylalanine and levodopa (a medication for Parkinson's disease). L-phenylalanine can reduce how much levodopa reaches your brain, potentially making tremor, stiffness, and symptom fluctuations worse—this is a Major-severity interaction.

Read the full breakdown — every affected drug type, severity by severity

Folic acid in this product interacts with several medications at Moderate severity: seizure medications (phenobarbital, phenytoin, and primidone), where folic acid may increase seizure risk; the cancer drug capecitabine and chemotherapy 5-fluorouracil, where it may increase toxicity; methotrexate, where it can reduce cancer-fighting effectiveness; and the antiparasitic pyrimethamine. Vitamin K here antagonizes warfarin (a blood thinner), which is also Major-severity.

Tyrosine may reduce levodopa effectiveness and could have additive effects with thyroid hormone medicines. Zinc interacts with multiple antibiotic types (quinolones, tetracyclines, and cephalexin), HIV medications (ritonavir and integrase inhibitors), the cancer drug cisplatin, and penicillamine—all at Moderate severity.

Iron reduces absorption of several drugs, including levodopa, antibiotics (quinolones and tetracyclines), bisphosphonates, and thyroid medication, also Moderate severity each. Chromium may lower blood sugar with antidiabetes drugs and insulin, and can reduce levothyroxine (thyroid) absorption.

Iodine interacts with lithium, antithyroid drugs, and amiodarone. Potassium supplements can raise blood potassium dangerously when combined with blood-pressure medicines (ACE inhibitors and ARBs) or potassium-sparing diuretics.

Inositol may increase low-blood-sugar risk with antidiabetes drugs. Choline has a Minor interaction with atropine, and L-lysine has a Minor interaction with serotonin-related drugs.

Threonine interacts with NMDA antagonists (a Major-severity interaction that may reduce their effects), and vitamin E interacts with blood thinners and antiplatelet drugs, chemotherapy agents, and niacin, all at Moderate severity.

We could not check interaction data for phosphorus, L-leucine, L-valine, PABA, or niacin/niacinamide. Altogether, these interactions span 1,051 individual medications.

Use the medication checker on this page to verify whether any of your specific drugs are affected.

Check your own medications below · Editorial policy · How we use AI

Want to check YOUR meds against Ultra Anabolic?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

Go to the checker

1,063Drugs

10 Major 1,011 Moderate 42 Minor

Ingredients driving the most interactions

Vitamin E 764

Chromium 178

Inositol 86

Iron 80

Zinc 67

Individual Drug Interactions

The ingredients in Ultra Anabolic interact with 1,063 drugs. Click any drug to see the details.

16 of the 26 ingredients in Ultra Anabolic interact with drugs. Each result below shows which ingredient is responsible. Vitamin E Chromium Inositol Iron Zinc Potassium Folic Acid L-Tyrosine Riboflavin L-Phenylalanine Choline Iodine Thiamine L-Threonine Vitamin K L-Lysine

All interactions 1,063 Major 10 Moderate 1,011 Minor 42

Showing 1–30 of 1,063 drugs.

Benserazide, LevodopaMadopar, Prolopa

Major

Benserazide, Levodopa belongs to Levodopa — the drug category that interacts with this product

How Benserazide, Levodopa interacts with Ultra Anabolic — through 3 ingredients. Tap an ingredient for the detail:

L-phenylalanineLevodopa Major

Interaction Summary

Phenylalanine, especially in high doses, can reduce the effectiveness of levodopa.

Read the full L-phenylalanine + Benserazide, Levodopa interaction

IronLevodopa Moderate

Interaction Summary

Iron might decrease levodopa levels by reducing its absorption.

Read the full Iron + Benserazide, Levodopa interaction

L-tyrosineLevodopa Moderate

Interaction Summary

Theoretically, tyrosine might decrease the effectiveness of levodopa.

Read the full L-tyrosine + Benserazide, Levodopa interaction

Carbidopa, LevodopaDhivy, Rytary, Sinemet, Sinemet CR

Major

Carbidopa, Levodopa belongs to Levodopa — the drug category that interacts with this product

How Carbidopa, Levodopa interacts with Ultra Anabolic — through 3 ingredients. Tap an ingredient for the detail:

L-phenylalanineLevodopa Major

Interaction Summary

Phenylalanine, especially in high doses, can reduce the effectiveness of levodopa.

Read the full L-phenylalanine + Carbidopa, Levodopa interaction

IronLevodopa Moderate

Interaction Summary

Iron might decrease levodopa levels by reducing its absorption.

Read the full Iron + Carbidopa, Levodopa interaction

L-tyrosineLevodopa Moderate

Interaction Summary

Theoretically, tyrosine might decrease the effectiveness of levodopa.

Read the full L-tyrosine + Carbidopa, Levodopa interaction

See the Carbidopa, Levodopa drug page: uses, dosage & side effects

Carbidopa, Levodopa, EntacaponeStalevo

Major

Carbidopa, Levodopa, Entacapone belongs to Levodopa — the drug category that interacts with this product

How Carbidopa, Levodopa, Entacapone interacts with Ultra Anabolic — through 3 ingredients. Tap an ingredient for the detail:

L-phenylalanineLevodopa Major

Interaction Summary

Phenylalanine, especially in high doses, can reduce the effectiveness of levodopa.

Read the full L-phenylalanine + Carbidopa, Levodopa, Entacapone interaction

L-tyrosineLevodopa Moderate

Interaction Summary

Theoretically, tyrosine might decrease the effectiveness of levodopa.

Read the full L-tyrosine + Carbidopa, Levodopa, Entacapone interaction

IronLevodopa Moderate

Interaction Summary

Iron might decrease levodopa levels by reducing its absorption.

Read the full Iron + Carbidopa, Levodopa, Entacapone interaction

LevodopaInbrija, Larodopa

Major

Levodopa belongs to Levodopa — the drug category that interacts with this product

How Levodopa interacts with Ultra Anabolic — through 3 ingredients. Tap an ingredient for the detail:

L-phenylalanineLevodopa Major

Interaction Summary

Phenylalanine, especially in high doses, can reduce the effectiveness of levodopa.

Read the full L-phenylalanine + Levodopa interaction

L-tyrosineLevodopa Moderate

Interaction Summary

Theoretically, tyrosine might decrease the effectiveness of levodopa.

Read the full L-tyrosine + Levodopa interaction

IronLevodopa Moderate

Interaction Summary

Iron might decrease levodopa levels by reducing its absorption.

Read the full Iron + Levodopa interaction

See the Levodopa drug page: uses, dosage & side effects

Levodopa, CarbidopaDuodopa

Major

Levodopa, Carbidopa belongs to Levodopa — the drug category that interacts with this product

How Levodopa, Carbidopa interacts with Ultra Anabolic — through 3 ingredients. Tap an ingredient for the detail:

L-phenylalanineLevodopa Major

Interaction Summary

Phenylalanine, especially in high doses, can reduce the effectiveness of levodopa.

Read the full L-phenylalanine + Levodopa, Carbidopa interaction

IronLevodopa Moderate

Interaction Summary

Iron might decrease levodopa levels by reducing its absorption.

Read the full Iron + Levodopa, Carbidopa interaction

L-tyrosineLevodopa Moderate

Interaction Summary

Theoretically, tyrosine might decrease the effectiveness of levodopa.

Read the full L-tyrosine + Levodopa, Carbidopa interaction

MemantineEbixa

Major

Memantine belongs to Nmda Antagonists — the drug category that interacts with this product

How Memantine interacts with Ultra Anabolic — through 1 ingredient. Tap an ingredient for the detail:

L-threonineNmda Antagonists Major

Interaction Summary

Theoretically, threonine might decrease the effects of NMDA antagonists.

Read the full L-threonine + Memantine interaction

See the Memantine drug page: uses, dosage & side effects

Memantine HydrochlorideNamenda

Major

Memantine Hydrochloride belongs to Nmda Antagonists — the drug category that interacts with this product

How Memantine Hydrochloride interacts with Ultra Anabolic — through 1 ingredient. Tap an ingredient for the detail:

L-threonineNmda Antagonists Major

Interaction Summary

Theoretically, threonine might decrease the effects of NMDA antagonists.

Read the full L-threonine + Memantine Hydrochloride interaction

See the Memantine Hydrochloride drug page: uses, dosage & side effects

Memantine, DonepezilNamzaric

Major

Memantine, Donepezil belongs to Nmda AntagonistsCytochrome P450 3a4 (cyp3a4) Substrates — the drug categories that interact with this product

How Memantine, Donepezil interacts with Ultra Anabolic — through 2 ingredients. Tap an ingredient for the detail:

L-threonineNmda Antagonists Major

Interaction Summary

Theoretically, threonine might decrease the effects of NMDA antagonists.

Read the full L-threonine + Memantine, Donepezil interaction

Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate

Interaction Summary

Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.

Read the full Vitamin E + Memantine, Donepezil interaction

WarfarinWarfarin

Major

Warfarin belongs to Warfarin (coumadin)Cytochrome P450 3a4 (cyp3a4) SubstratesAnticoagulant/antiplatelet Drugs — the drug categories that interact with this product

How Warfarin interacts with Ultra Anabolic — through 2 ingredients. Tap an ingredient for the detail:

Vitamin KWarfarin (coumadin) Major

Interaction Summary

Vitamin K can antagonize and reverse the therapeutic effects of warfarin.

Read the full Vitamin K + Warfarin interaction

Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates, Anticoagulant/antiplatelet Drugs +1 Moderate

Interaction Summary

Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.

Read the full Vitamin E + Warfarin interaction

See the Warfarin drug page: uses, dosage & side effects

Warfarin SodiumCoumadin, Panwarfin, Sofarin

Major

Warfarin Sodium belongs to Warfarin (coumadin)Anticoagulant/antiplatelet DrugsCytochrome P450 3a4 (cyp3a4) Substrates — the drug categories that interact with this product

How Warfarin Sodium interacts with Ultra Anabolic — through 2 ingredients. Tap an ingredient for the detail:

Vitamin KWarfarin (coumadin) Major

Interaction Summary

Vitamin K can antagonize and reverse the therapeutic effects of warfarin.

Read the full Vitamin K + Warfarin Sodium interaction

Vitamin EAnticoagulant/antiplatelet Drugs, Warfarin (coumadin) +1 Moderate

Interaction Summary

Concomitant use of vitamin E and anticoagulant or antiplatelet agents might increase the risk of bleeding.

Read the full Vitamin E + Warfarin Sodium interaction

See the Warfarin Sodium drug page: uses, dosage & side effects

Ado-trastuzumab EmtansineKadcyla

Moderate

Ado-trastuzumab Emtansine belongs to Cytochrome P450 3a4 (cyp3a4) Substrates — the drug category that interacts with this product

How Ado-trastuzumab Emtansine interacts with Ultra Anabolic — through 1 ingredient. Tap an ingredient for the detail:

Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate

Interaction Summary

Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.

Read the full Vitamin E + Ado-trastuzumab Emtansine interaction

See the Ado-trastuzumab Emtansine drug page: uses, dosage & side effects

AbciximabReoPro

Moderate

Abciximab belongs to Anticoagulant/antiplatelet Drugs — the drug category that interacts with this product

How Abciximab interacts with Ultra Anabolic — through 1 ingredient. Tap an ingredient for the detail:

Vitamin EAnticoagulant/antiplatelet Drugs Moderate

Interaction Summary

Concomitant use of vitamin E and anticoagulant or antiplatelet agents might increase the risk of bleeding.

Read the full Vitamin E + Abciximab interaction

AbemaciclibVerzenio

Moderate

Abemaciclib belongs to Cytochrome P450 3a4 (cyp3a4) Substrates — the drug category that interacts with this product

How Abemaciclib interacts with Ultra Anabolic — through 1 ingredient. Tap an ingredient for the detail:

Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate

Interaction Summary

Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.

Read the full Vitamin E + Abemaciclib interaction

See the Abemaciclib drug page: uses, dosage & side effects

Abiraterone

Moderate

Abiraterone belongs to Cytochrome P450 3a4 (cyp3a4) Substrates — the drug category that interacts with this product

How Abiraterone interacts with Ultra Anabolic — through 1 ingredient. Tap an ingredient for the detail:

Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate

Interaction Summary

Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.

Read the full Vitamin E + Abiraterone interaction

See the Abiraterone drug page: uses, dosage & side effects

Abiraterone AcetateYonsa, Zytiga

Moderate

Abiraterone Acetate belongs to Cytochrome P450 3a4 (cyp3a4) Substrates — the drug category that interacts with this product

How Abiraterone Acetate interacts with Ultra Anabolic — through 1 ingredient. Tap an ingredient for the detail:

Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate

Interaction Summary

Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.

Read the full Vitamin E + Abiraterone Acetate interaction

See the Abiraterone Acetate drug page: uses, dosage & side effects

AbrocitinibCibinqo

Moderate

Abrocitinib belongs to Anticoagulant/antiplatelet Drugs — the drug category that interacts with this product

How Abrocitinib interacts with Ultra Anabolic — through 1 ingredient. Tap an ingredient for the detail:

Vitamin EAnticoagulant/antiplatelet Drugs Moderate

Interaction Summary

Concomitant use of vitamin E and anticoagulant or antiplatelet agents might increase the risk of bleeding.

Read the full Vitamin E + Abrocitinib interaction

See the Abrocitinib drug page: uses, dosage & side effects

AcalabrutinibCalquence

Moderate

Acalabrutinib belongs to Cytochrome P450 3a4 (cyp3a4) Substrates — the drug category that interacts with this product

How Acalabrutinib interacts with Ultra Anabolic — through 1 ingredient. Tap an ingredient for the detail:

Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate

Interaction Summary

Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.

Read the full Vitamin E + Acalabrutinib interaction

See the Acalabrutinib drug page: uses, dosage & side effects

AcarboseGlucobay, Prandase, Precose

Moderate

Acarbose belongs to Antidiabetes Drugs — the drug category that interacts with this product

How Acarbose interacts with Ultra Anabolic — through 2 ingredients. Tap an ingredient for the detail:

ChromiumAntidiabetes Drugs Moderate

Interaction Summary

Theoretically, chromium may have additive effects with antidiabetic agents and increase the risk of hypoglycemia.

Read the full Chromium + Acarbose interaction

InositolAntidiabetes Drugs Moderate

Interaction Summary

Theoretically, taking inositol with antidiabetes drugs might increase the risk of hypoglycemia.

Read the full Inositol + Acarbose interaction

See the Acarbose drug page: uses, dosage & side effects

AcenocoumarolSintrom

Moderate

Acenocoumarol belongs to Anticoagulant/antiplatelet Drugs — the drug category that interacts with this product

How Acenocoumarol interacts with Ultra Anabolic — through 1 ingredient. Tap an ingredient for the detail:

Vitamin EAnticoagulant/antiplatelet Drugs Moderate

Interaction Summary

Concomitant use of vitamin E and anticoagulant or antiplatelet agents might increase the risk of bleeding.

Read the full Vitamin E + Acenocoumarol interaction

Acetaminophen, AspirinGemnisyn

Moderate

Acetaminophen, Aspirin belongs to Anticoagulant/antiplatelet DrugsNonsteroidal Anti-inflammatory Drugs (nsaids)Aspirin — the drug categories that interact with this product

How Acetaminophen, Aspirin interacts with Ultra Anabolic — through 2 ingredients. Tap an ingredient for the detail:

Vitamin EAnticoagulant/antiplatelet Drugs Moderate

Interaction Summary

Concomitant use of vitamin E and anticoagulant or antiplatelet agents might increase the risk of bleeding.

Read the full Vitamin E + Acetaminophen, Aspirin interaction

ChromiumNonsteroidal Anti-inflammatory Drugs (nsaids), Aspirin Minor

Interaction Summary

NSAIDs might increase chromium levels in the body.

Read the full Chromium + Acetaminophen, Aspirin interaction

Acetaminophen, Aspirin, CaffeineExcedrin, Excedrin Extra Strength, Excedrin Migraine

Moderate

Acetaminophen, Aspirin, Caffeine belongs to Cytochrome P450 3a4 (cyp3a4) SubstratesAnticoagulant/antiplatelet DrugsNonsteroidal Anti-inflammatory Drugs (nsaids)Aspirin — the drug categories that interact with this product

How Acetaminophen, Aspirin, Caffeine interacts with Ultra Anabolic — through 2 ingredients. Tap an ingredient for the detail:

Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates, Anticoagulant/antiplatelet Drugs Moderate

Interaction Summary

Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.

Read the full Vitamin E + Acetaminophen, Aspirin, Caffeine interaction

ChromiumNonsteroidal Anti-inflammatory Drugs (nsaids), Aspirin Minor

Interaction Summary

NSAIDs might increase chromium levels in the body.

Read the full Chromium + Acetaminophen, Aspirin, Caffeine interaction

Acetaminophen, Butalbital, CaffeineEsgic, Esgic Plus, Fiogesic, Fioricet, Repan, Tecnal +1 more

Moderate

Acetaminophen, Butalbital, Caffeine belongs to Cytochrome P450 3a4 (cyp3a4) Substrates — the drug category that interacts with this product

How Acetaminophen, Butalbital, Caffeine interacts with Ultra Anabolic — through 1 ingredient. Tap an ingredient for the detail:

Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate

Interaction Summary

Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.

Read the full Vitamin E + Acetaminophen, Butalbital, Caffeine interaction

See the Acetaminophen, Butalbital, Caffeine drug page: uses, dosage & side effects

Acetaminophen, Butalbital, Caffeine, CodeineEsgic with Codeine, Fioricet w/ Codeine

Moderate

Acetaminophen, Butalbital, Caffeine, Codeine belongs to Cytochrome P450 3a4 (cyp3a4) Substrates — the drug category that interacts with this product

How Acetaminophen, Butalbital, Caffeine, Codeine interacts with Ultra Anabolic — through 1 ingredient. Tap an ingredient for the detail:

Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate

Interaction Summary

Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.

Read the full Vitamin E + Acetaminophen, Butalbital, Caffeine, Codeine interaction

Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound

Moderate

Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine belongs to Cytochrome P450 3a4 (cyp3a4) Substrates — the drug category that interacts with this product

How Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interacts with Ultra Anabolic — through 1 ingredient. Tap an ingredient for the detail:

Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate

Interaction Summary

Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.

Read the full Vitamin E + Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interaction

Acetaminophen, Caffeine, CodeineGesic C15, Gesic C30, Gesic C8, Lenoltec 1, Lenoltec 2, Lenoltec 3 +1 more

Moderate

Acetaminophen, Caffeine, Codeine belongs to Cytochrome P450 3a4 (cyp3a4) Substrates — the drug category that interacts with this product

How Acetaminophen, Caffeine, Codeine interacts with Ultra Anabolic — through 1 ingredient. Tap an ingredient for the detail:

Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate

Interaction Summary

Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.

Read the full Vitamin E + Acetaminophen, Caffeine, Codeine interaction

Acetaminophen, Caffeine, Codeine, SalicylamideCodalan No.1, Codalan No.2, Codalan No.3

Moderate

Acetaminophen, Caffeine, Codeine, Salicylamide belongs to Cytochrome P450 3a4 (cyp3a4) Substrates — the drug category that interacts with this product

How Acetaminophen, Caffeine, Codeine, Salicylamide interacts with Ultra Anabolic — through 1 ingredient. Tap an ingredient for the detail:

Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate

Interaction Summary

Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.

Read the full Vitamin E + Acetaminophen, Caffeine, Codeine, Salicylamide interaction

Acetaminophen, Caffeine, DihydrocodeineDHC Plus, Panlor DC, Panlor SS

Moderate

Acetaminophen, Caffeine, Dihydrocodeine belongs to Cytochrome P450 3a4 (cyp3a4) Substrates — the drug category that interacts with this product

How Acetaminophen, Caffeine, Dihydrocodeine interacts with Ultra Anabolic — through 1 ingredient. Tap an ingredient for the detail:

Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate

Interaction Summary

Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.

Read the full Vitamin E + Acetaminophen, Caffeine, Dihydrocodeine interaction

Acetaminophen, Caffeine, IsomethepteneMigralam

Moderate

Acetaminophen, Caffeine, Isometheptene belongs to Cytochrome P450 3a4 (cyp3a4) Substrates — the drug category that interacts with this product

How Acetaminophen, Caffeine, Isometheptene interacts with Ultra Anabolic — through 1 ingredient. Tap an ingredient for the detail:

Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate

Interaction Summary

Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.

Read the full Vitamin E + Acetaminophen, Caffeine, Isometheptene interaction

Acetaminophen, Caffeine, PyrilamineMidol Max Strength Menstrual

Moderate

Acetaminophen, Caffeine, Pyrilamine belongs to Cytochrome P450 3a4 (cyp3a4) Substrates — the drug category that interacts with this product

How Acetaminophen, Caffeine, Pyrilamine interacts with Ultra Anabolic — through 1 ingredient. Tap an ingredient for the detail:

Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate

Interaction Summary

Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.

Read the full Vitamin E + Acetaminophen, Caffeine, Pyrilamine interaction

Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan HbrVicks Formula 44M Cough, Cold & Flu Relief

Moderate

Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr belongs to Cytochrome P450 3a4 (cyp3a4) Substrates — the drug category that interacts with this product

How Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interacts with Ultra Anabolic — through 1 ingredient. Tap an ingredient for the detail:

Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate

Interaction Summary

Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.

Read the full Vitamin E + Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interaction

Each ingredient & the kinds of drugs it affects

For each ingredient in Ultra Anabolic with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.

Vitamin E8 drug types · 764 drugs

Alkylating Agents

Theoretically, antioxidant effects of vitamin E might reduce the effectiveness of alkylating agents.
There's concern that antioxidants could reduce the activity of chemotherapy drugs which generate free radicals, such as cyclophosphamide, chlorambucil, carmustine, busulfan, and thiotepa. However, some researchers theorize that antioxidants might make chemotherapy more effective by reducing oxidative stress that might interfere with apoptosis (cell death) of cancer cells. More evidence is needed to determine what effect, if any, antioxidants such as vitamin E have on chemotherapy. Advise patients to consult their oncologist before using vitamin E supplements, especially in high doses.

Likelihood Possible Evidence D

Anticoagulant/Antiplatelet Drugs

Concomitant use of vitamin E and anticoagulant or antiplatelet agents might increase the risk of bleeding.
Vitamin E seems to inhibit of platelet aggregation and antagonize the effects of vitamin K-dependent clotting factors. These effects appear to be dose-dependent, and are probably only likely to be clinically significant with doses of at least 800 units daily. Mixed tocopherols, such as those found in food, might have a greater antiplatelet effect than alpha-tocopherol. RRR alpha-tocopherol (natural vitamin E) 1000 IU daily antagonizes vitamin K-dependent clotting factors. Advise patients to avoid high doses of vitamin E, especially in people with low vitamin K intake or other risk factors for bleeding.

Likelihood Possible Evidence B

Antitumor Antibiotics

Theoretically, antioxidant effects of vitamin E might reduce the effectiveness of antitumor antibiotics.
There's concern that antioxidants could reduce the activity of antitumor antibiotic drugs such as doxorubicin, which generate free radicals. However, some researchers theorize that antioxidants might make chemotherapy more effective by reducing oxidative stress that might interfere with apoptosis (cell death) of cancer cells. More evidence is needed to determine what effect, if any, antioxidants such as vitamin E have on chemotherapy involving antitumor antibiotics. Advise patients to consult their oncologist before using vitamin E supplements, especially in high doses.

Likelihood Possible Evidence D

Cyclosporine (Neoral, Sandimmune)

A specific form of vitamin E might increase absorption and levels of cyclosporine.
There is some evidence that one specific formulation of vitamin E (D-alpha-tocopheryl-polyethylene glycol-1000 succinate, TPGS, tocophersolan, Liqui-E) might increase absorption of cyclosporine. This vitamin E formulation forms micelles which seems to increase absorption of cyclosporine by 40% to 72% in some patients. However, this interaction is unlikely to occur with the usual forms of vitamin E.

Likelihood Unlikely Evidence B

Cytochrome P450 3A4 (Cyp3A4) Substrates

Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Vitamin E appears to bind with the nuclear receptor, pregnane X receptor (PXR), which results in increased expression of CYP3A4. Although the clinical significance of this is not known, use caution when considering concomitant use of vitamin E and other drugs affected by these enzymes.

Likelihood Possible Evidence D

Selumetinib (Koselugo)

Taking selumetinib with vitamin E can result in a total daily dose of vitamin E that exceeds safe limits and therefore might increase the risk of bleeding.
Selumetinib contains 48-54 IU vitamin E per capsule. The increased risk of bleeding with vitamin E appears to be dose-dependent. Be cautious when using selumetinib in combination with supplemental vitamin E, especially in patients at higher risk of bleed, such as those with chronic conditions and those taking antiplatelet drugs.

Likelihood Possible Evidence D

Warfarin (Coumadin)

Using vitamin E with warfarin might increase the risk of bleeding.
Due to interference with production of vitamin K-dependent clotting factors, use of more than 400 IU of vitamin E daily with warfarin might increase prothrombin time (PT), INR, and the risk of bleeding,. At a dose of 1000 IU per day, vitamin E can antagonize vitamin K-dependent clotting factors even in people not taking warfarin. Limited clinical evidence suggests that doses up to 1200 IU daily may be used safely by patients taking warfarin, but this may not be applicable in all patient populations.

Likelihood Possible Evidence B

Niacin

Vitamin E might decrease the beneficial effects of niacin on high-density lipoprotein (HDL) cholesterol levels.
A combination of niacin and simvastatin (Zocor) effectively raises high-density lipoprotein (HDL) cholesterol levels in people with coronary disease and low HDL levels. Clinical research shows that taking a combination of antioxidants (vitamin C, vitamin E, beta-carotene, and selenium) along with niacin and simvastatin (Zocor) attenuates this rise in HDL, specifically the HDL-2 and apolipoprotein A1 fractions, by more than 50%. Vitamin E alone combined with a statin does not seem to decrease HDL levels. It is not known whether the adverse effect on HDL is due to one of the other antioxidants or to the combination. It also is not known whether it will occur in other patient populations.

Likelihood Possible Evidence A

Vitamin E full monograph & interactions

Chromium5 drug types · 178 drugs

Antidiabetes Drugs

Theoretically, chromium may have additive effects with antidiabetic agents and increase the risk of hypoglycemia.
Some research shows that taking chromium might lower blood glucose levels, especially in patients with poorly controlled type 2 diabetes.

Likelihood Possible Evidence A

Insulin

Theoretically, concomitant use of chromium and insulin might increase the risk of hypoglycemia.
In clinical research, chromium has been shown to increase insulin sensitivity,

Likelihood Possible Evidence B

Levothyroxine (Synthroid, Others)

Chromium might bind levothyroxine in the intestinal tract and decrease levothyroxine absorption.
Clinical research in healthy volunteers shows that taking chromium picolinate 1000 mcg with levothyroxine 1 mg decreases serum levels of levothyroxine by 17% when compared to taking levothyroxine alone. Advise patients to take levothyroxine at least 30 minutes before or 3-4 hours after taking chromium.

Likelihood Probable Evidence B

Aspirin

Theoretically, aspirin might increase chromium absorption.
Animal research suggests that aspirin may increase chromium absorption and chromium levels in the blood.

Likelihood Possible Evidence D

Nonsteroidal Anti-Inflammatory Drugs (Nsaids)

NSAIDs might increase chromium levels in the body.
Drugs that are prostaglandin inhibitors, such as NSAIDs, seem to increase chromium absorption and retention.

Likelihood Possible Evidence D

Chromium full monograph & interactions

Inositol1 drug type · 86 drugs

Antidiabetes Drugs

Theoretically, taking inositol with antidiabetes drugs might increase the risk of hypoglycemia.
Clinical research shows that inositol lowers blood glucose levels and glycated hemoglobin (HbA1c) levels in patients with diabetes.

Likelihood Possible Evidence A

Inositol full monograph & interactions

Iron13 drug types · 80 drugs

Bictegravir/Emtricitabine/Tenofovir Alafenamide (Biktarvy)

Iron might decrease levels of bictegravir/emtricitabine/tenofovir alafenamide by reducing its absorption when taken in a fasting state.
Advise patients that bictegravir/emtricitabine/tenofovir alafenamide and iron can be taken together if taken with food. However, if taken on an empty stomach, bictegravir/emtricitabine/tenofovir alafenamide should not be taken with, or 2 hours after, iron containing products.

Likelihood Probable Evidence D

Bisphosphonates

Iron reduces the absorption of bisphosphonates.
Advise patients that doses of bisphosphonates should be separated by at least two hours from doses of all other medications, including supplements such as iron. Divalent cations, including iron, can decrease absorption of bisphosphonates by forming insoluble complexes in the gastrointestinal tract.

Likelihood Probable Evidence D

Denosumab (Prolia, Others)

Administration of intravenous iron within one month of denosumab administration might increase the risk of severe hypophosphatemia and hypocalcemia.
A case of severe hypocalcemia (albumin corrected calcium 6.88 mg/dL, ionized calcium 3.68 mg/dL) and hypophosphatemia (<0.5 mg/dL) with respiratory acidosis, QT interval prolongation, and nonsustained ventricular tachycardia was reported in a 76-year-old male who had received an iron polymaltose infusion within 2 weeks of a subcutaneous injection of denosumab. Serum parathyroid hormone was also elevated (348 pg/mL). Subsequent iron infusions with iron polymaltose and ferric carboxymaltose were followed by transient hypophosphatemia, but without hypocalcemia. Additionally, a literature review describes 6 additional cases of hypophosphatemia and hypocalcemia in patients 52-92 years of age who had been administered intravenous iron as either ferric carboxymaltose or iron polymaltose and subcutaneous denosumab within 1-4 weeks of each other.

Likelihood Possible Evidence D

Dolutegravir (Tivicay)

Iron might decrease dolutegravir levels by reducing its absorption.
Advise patients to take dolutegravir at least 2 hours before or 6 hours after taking iron. Pharmacokinetic research shows that iron can decrease the absorption of dolutegravir from the gastrointestinal tract through chelation. When taken under fasting conditions, a single dose of ferrous fumarate 324 mg orally along with dolutegravir 50 mg reduces overall exposure to dolutegravir by 54%.

Likelihood Probable Evidence B

Integrase Inhibitors

Theoretically, taking iron along with integrase inhibitors might decrease the levels and clinical effects of these drugs.
Iron is a divalent cation. There is concern that iron may decrease the absorption of integrase inhibitors from the gastrointestinal tract through chelation. One pharmacokinetic study shows that iron can decrease blood levels of the specific integrase inhibitor dolutegravir through chelation. Also, other pharmacokinetic research shows that other divalent cations such as calcium can decrease the absorption and levels of some integrase inhibitors through chelation.

Likelihood Possible Evidence D

Levodopa

Iron might decrease levodopa levels by reducing its absorption.
Advise patients to separate doses of levodopa and iron as much as possible. There is some evidence in healthy people that iron forms chelates with levodopa, reducing the amount of levodopa absorbed by around 50%. The clinical significance of this hasn't been determined.

Likelihood Probable Evidence B

Levothyroxine (Synthroid, Others)

Iron might decrease levothyroxine levels by reducing its absorption.
Advise patients to separate levothyroxine and iron doses by at least 2 hours. Iron can decrease the absorption and efficacy of levothyroxine by forming insoluble complexes in the gastrointestinal tract.

Likelihood Probable Evidence B

Methyldopa (Aldomet)

Iron might decrease methyldopa levels by reducing its absorption.
Advise patients to separate methyldopa and iron doses by at least 2 hours. Iron can decrease the absorption of methyldopa from the gastrointestinal tract through chelation, resulting in increases in blood pressure.

Likelihood Probable Evidence B

Mycophenolate Mofetil (Cellcept)

Theoretically, iron might decrease mycophenolate mofetil levels by reducing its absorption.
Advise patients to take iron 4-6 hours before, or 2 hours after, mycophenolate mofetil. It has been suggested that a decrease of absorption is possible, probably by forming nonabsorbable chelates. However, mycophenolate pharmacokinetics are not affected by iron supplementation in available clinical research.

Likelihood Unlikely Evidence D

Penicillamine (Cuprimine, Depen)

Iron might decrease penicillamine levels by reducing its absorption.
Advise patients to separate penicillamine and iron doses by at least 2 hours. Oral iron supplements can reduce absorption of penicillamine by 30% to 70%, probably due to chelate formation. In people with Wilson's disease, this interaction has led to reduced efficacy of penicillamine.

Likelihood Probable Evidence D

Quinolone Antibiotics

Iron might decrease levels of quinolone antibiotics by reducing their absorption.
Advise patients to separate quinolone antibiotics and iron doses by at least 2 hours. Iron decreases the absorption of quinolones due to formation of insoluble complexes in the gastrointestinal tract.

Likelihood Probable Evidence D

Tetracycline Antibiotics

Iron might decrease levels of tetracycline antibiotics by reducing their absorption.
Advise patients to take iron at least 2 hours before or 4 hours after tetracycline antibiotics. Concomitant use can decrease absorption of tetracycline antibiotics from the gastrointestinal tract by 50% to 90%.

Likelihood Probable Evidence D

Chloramphenicol

Theoretically, taking chloramphenicol with iron might reduce the response to iron therapy in iron deficiency anemia.
Chloramphenicol interferes with erythrocyte maturation. However, since chloramphenicol isn't usually taken for prolonged periods, this isn't likely to be clinically significant.

Likelihood Unlikely Evidence D

Iron full monograph & interactions

Zinc10 drug types · 67 drugs

Bictegravir/Emtricitabine/Tenofovir Alafenamide (Biktarvy)

Theoretically, zinc might decrease levels of bictegravir/emtricitabine/tenofovir alafenamide by reducing its absorption.
Advise patients that bictegravir/emtricitabine/tenofovir alafenamide should be taken at least 2 hours before or 6 hours after zinc containing products.

Likelihood Probable Evidence D

Cephalexin (Keflex)

Zinc might decrease cephalexin levels by chelating with cephalexin in the gut and preventing its absorption.
A pharmacokinetic study shows that zinc sulfate 250 mg taken concomitantly with cephalexin 500 mg decreases peak levels of cephalexin by 31% and reduces the exposure to cephalexin by 27%. Also, taking zinc sulfate 3 hours before cephalexin decreases peak levels of cephalexin by 11% and reduces the exposure to cephalexin by 18%. By decreasing cephalexin levels, zinc might increase the risk of treatment failure. This effect does not occur when zinc is taken 3 hours after the cephalexin dose. To avoid an interaction, advise patients take zinc sulfate 3 hours after taking cephalexin.

Likelihood Probable Evidence B

Cisplatin (Platinol-Aq)

Theoretically, zinc might interfere with the therapeutic effects of cisplatin.
Animal research suggests that zinc stimulates tumor cell production of the protein metallothionein, which binds and inactivates cisplatin. It is not known whether zinc supplements or high dietary zinc intake can cause clinically significant interference with cisplatin therapy. Cisplatin might also increase zinc excretion.

Likelihood Possible Evidence D

Integrase Inhibitors

Theoretically, taking zinc along with integrase inhibitors might decrease the levels and clinical effects of these drugs.
Zinc is a divalent cation. Pharmacokinetic studies have shown that other divalent cations such as calcium and iron can decrease blood levels of the integrase inhibitor dolutegravir through chelation.

Likelihood Possible Evidence D

Penicillamine (Cuprimine, Depen)

Zinc might reduce the levels and clinical effects of penicillamine.
By forming an insoluble complex with penicillamine, zinc interferes with penicillamine absorption and activity. Zinc supplements reduce the efficacy of low-dose penicillamine (0.5-1 gram/day), but do not seem to affect higher doses (1-2.75 gram/day), provided dosing times are separated. Advise patients to take zinc and penicillamine at least 2 hours apart.

Likelihood Probable Evidence B

Quinolone Antibiotics

Zinc can decrease the levels and clinical effects of quinolones antibiotics.
Quinolones form complexes with zinc in the gastrointestinal tract, reducing absorption of both the quinolone and zinc if taken at the same time. Advise patients to take these drugs at least 2 hours before, or 4-6 hours after, zinc supplements.

Likelihood Probable Evidence B

Ritonavir (Norvir)

Zinc modestly reduces levels of ritonavir.
Clinical research shows that zinc might reduce serum ritonavir levels by chelating with ritonavir in the gut and preventing its absorption. In patients with HIV, ritonavir is taken with atazanavir to prevent the metabolism and increase the effects of atazanavir. A pharmacokinetic study shows that, in patients being treated with atazanavir/ritonavir, co-administration of zinc sulfate (Solvazinc tablets) 125 mg as a single dose or as multiple daily doses for 2 weeks reduces plasma levels of ritonavir by about 16%. However, atazanavir levels still remains high enough to prevent HIV virus replication. Therefore, the decrease in ritonavir levels is not likely to be clinically significant.

Likelihood Probable Evidence B

Tetracycline Antibiotics

Zinc might reduce levels of tetracycline antibiotics.
Tetracyclines form complexes with zinc in the gastrointestinal tract, which can reduce absorption of both the tetracycline and zinc when taken at the same time. Taking zinc sulfate 200 mg with tetracycline reduces absorption of the antibiotic by 30% to 40%. Demeclocycline and minocycline cause a similar interaction. However, doxycycline does not seem to interact significantly with zinc. Advise patients to take tetracyclines at least 2 hours before, or 4-6 hours after, zinc supplements to avoid any interactions.

Likelihood Probable Evidence B

Amiloride (Midamor)

Amiloride can modestly reduce zinc excretion and increase zinc levels.
Clinical research shows that amiloride can reduce urinary zinc excretion, especially at doses of 10 mg per day or more. This zinc-sparing effect can help to counteract zinc losses caused by thiazide diuretics, but it is unlikely to cause zinc toxicity at usual amiloride doses. The other potassium-sparing diuretics, spironolactone (Aldactone) and triamterene (Dyrenium), do not seem to have a zinc-sparing effect.

Likelihood Probable Evidence B

Atazanavir (Reyataz)

Zinc modestly reduces levels of atazanavir, although this effect does not seem to be clinically significant.
Clinical research shows that zinc might decrease serum atazanavir levels by chelating with atazanavir in the gut and preventing its absorption. Although a single dose of zinc sulfate (Solvazinc tablets) 125 mg orally does not affect atazanavir concentrations in patients being treated with atazanavir/ritonavir, co-administration of zinc sulfate 125 mg daily for 2 weeks reduces plasma levels of atazanavir by about 22% in these patients. However, despite this decrease, atazanavir levels still remain at high enough concentrations for the prevention of HIV virus replication.

Likelihood Probable Evidence B

Zinc full monograph & interactions

Potassium3 drug types · 62 drugs

Ace Inhibitors (Aceis)

Using ACEIs with high doses of potassium increases the risk of hyperkalemia.
ACEIs block the actions of the renin-angiotensin-aldosterone system and reduce potassium excretion. Concomitant use of these drugs with potassium supplements increases the risk of hyperkalemia. However, concomitant use of these drugs with moderate dietary potassium intake (about 3775-5200 mg daily) does not increase serum potassium levels.

Likelihood Likely Evidence C

Angiotensin Receptor Blockers (Arbs)

Using ARBs with high doses of potassium increases the risk of hyperkalemia.
ARBs block the actions of the renin-angiotensin-aldosterone system and reduce potassium excretion. Concomitant use of these drugs with potassium supplements increases the risk of hyperkalemia. However, concomitant use of these drugs with moderate dietary potassium intake (about 3775-5200 mg daily) does not increase serum potassium levels.

Likelihood Likely Evidence C

Potassium-Sparing Diuretics

Concomitant use increases the risk of hyperkalemia.
Using potassium-sparing diuretics with potassium supplements increases the risk of hyperkalemia.

Likelihood Likely Evidence C

Potassium full monograph & interactions

Folic Acid7 drug types · 40 drugs

5-Fluorouracil

Theoretically, high doses of folic acid might increase the toxicity of 5-fluorouracil.
Increases in gastrointestinal side effects of 5-fluorouracil, such as stomatitis and diarrhea, have been described in two clinical studies when leucovorin, a form of folic acid, was administered with 5-fluorouracil.

Likelihood Possible Evidence D

Capecitabine (Xeloda)

Use of high-dose folic acid might contribute to capecitabine toxicity.
Clinical research suggests that higher serum folate levels are associated with an increased risk for moderate or severe toxicity during capecitabine-based treatment for colorectal cancer. Additionally, in one case report, taking folic acid 15 mg daily might have contributed to increased toxicity, including severe diarrhea, vomiting, edema, hand-foot syndrome, and eventually death, in a patient prescribed capecitabine.

Likelihood Possible Evidence D

Methotrexate (Trexall, Others)

Folic acid might reduce the efficacy of methotrexate as a cancer treatment when given concurrently.
Methotrexate exerts its cytotoxic effects by preventing conversion of folic acid to the active form needed by cells. There is some evidence that folic acid supplements reduce the efficacy of methotrexate in the treatment of acute lymphoblastic leukemia, and theoretically they could reduce its efficacy in the treatment of other cancers. Advise cancer patients to consult their oncologist before using folic acid supplements. In patients treated with long-term, low-dose methotrexate for rheumatoid arthritis (RA) or psoriasis, folic acid supplements can reduce the incidence of side effects, without reducing efficacy.

Likelihood Probable Evidence B

Phenobarbital (Luminal)

Folic acid might have antagonistic effects on phenobarbital and increase the risk for seizures.
Folic acid can have direct convulsant activity in some people, reversing the effects of phenobarbital and worsening seizure control. Monitor closely for increased seizure activity.

Likelihood Probable Evidence B

Phenytoin (Dilantin)

Folic acid might reduce serum levels of phenytoin in some patients.
Folic acid may be a cofactor in phenytoin metabolism. Folic acid, in doses of 1 mg daily or more, can reduce serum levels of phenytoin in some patients. Increases in seizure frequency have been reported. If folic acid supplements are added to established phenytoin therapy, monitor serum phenytoin levels closely. If phenytoin and folic acid are started at the same time and continued together, adverse changes in phenytoin pharmacokinetics are avoided. Note that phenytoin also reduces serum folate levels.

Likelihood Probable Evidence B

Primidone (Mysoline)

Folic acid might have antagonistic effects on primidone and increase the risk for seizures.
Folic acid can have direct convulsant activity in some people, reversing the effects of primidone and worsening seizure control. Monitor closely for increased seizure activity. Note that primidone also reduces serum folate levels.

Likelihood Probable Evidence B

Pyrimethamine (Daraprim)

Folic acid might antagonize the effects of pyrimethamine.
Folic acid can antagonize the antiparasitic effects of pyrimethamine against toxoplasmosis and Pneumocystis carinii pneumonia. Folic acid doesn't antagonize the effects of pyrimethamine in the treatment of malaria, because malarial parasites cannot use exogenous folic acid. Use folinic acid as an alternative to folic acid when indicated.

Likelihood Probable Evidence D

Folic Acid full monograph & interactions

L-Tyrosine2 drug types · 21 drugs

Levodopa

Theoretically, tyrosine might decrease the effectiveness of levodopa.
Tyrosine and levodopa compete for absorption in the proximal duodenum by the large neutral amino acid (LNAA) transport system. Advise patients to separate doses of tyrosine and levodopa by at least 2 hours.

Likelihood Probable Evidence D

Thyroid Hormone

Theoretically, tyrosine might have additive effects with thyroid hormone medications.
Tyrosine is a precursor to thyroxine and might increase levels of thyroid hormones.

Likelihood Probable Evidence D

L-Tyrosine full monograph & interactions

Riboflavin1 drug type · 20 drugs

Tetracycline Antibiotics

Theoretically, taking riboflavin with tetracycline antibiotics may decrease the potency of these antibiotics.
In vitro research suggests that riboflavin may inhibit the potency of tetracycline antibiotics. It is not clear if this effect is clinically significant, as this interaction has not been reported in humans.

Likelihood Possible Evidence D

Riboflavin full monograph & interactions

L-Phenylalanine3 drug types · 16 drugs

Levodopa

Phenylalanine, especially in high doses, can reduce the effectiveness of levodopa.
Phenylalanine competes with levodopa for carrier-mediated transport into the brain. The resulting reduction in levels of levodopa in the brain can exacerbate tremor, rigidity, and the "on-off" phenomenon in patients with Parkinson disease.

Likelihood Probable Evidence B

Baclofen

Concomitant intake of phenylalanine may reduce the intestinal absorption of baclofen.
Phenylalanine and baclofen share the same intestinal carrier for absorption; phenylalanine competitively inhibits the absorption of baclofen, reducing its plasma levels.

Likelihood Possible Evidence D

Monoamine Oxidase Inhibitors (Maois)

Theoretically, concomitant use of L-phenylalanine and non-selective MAOIs might increase the risk of hypertensive crisis.
L-phenylalanine is metabolized to tyrosine. Some evidence suggests that L-phenylalanine, given with the non-selective MAOI pargyline, might prevent the elimination of tyramine, increasing the risk of hypertensive crisis. However, this was not reported in a small number of patients when using L-phenylalanine with the partially selective MAO-B inhibitor, selegiline.

Likelihood Possible Evidence D

L-Phenylalanine full monograph & interactions

Choline1 drug type · 16 drugs

Atropine

Theoretically, choline might decrease the effects of atropine in the brain.
Animal research shows that administering choline one hour before administering atropine can attenuate atropine-induced decreases in brain levels of acetylcholine. Theoretically, concomitant use of choline and atropine may decrease the effects of atropine.

Likelihood Possible Evidence D

Choline full monograph & interactions

Iodine3 drug types · 7 drugs

Amiodarone (Cordarone)

Combining iodine with amiodarone might cause excessively high iodine levels.
Amiodarone contains 37.3% iodine and can increase iodine levels. Concomitant use with iodine might increase the risk of having excessive iodine levels and adversely affecting thyroid function. Monitor thyroid function.

Likelihood Probable Evidence D

Antithyroid Drugs

Iodine might alter the effects of antithyroid drugs.
Iodine in high doses has been reported to cause both hyperthyroidism and hypothyroidism, depending on the individual's past medical history. Taking iodine while using antithyroid drugs could alter the effects of the antithyroid drugs.

Likelihood Probable Evidence D

Lithium

Combining iodine with lithium might have additive hypothyroid effects.
Lithium can inhibit thyroid function. Several case reports suggest that concomitant use of lithium and potassium iodide can reduce thyroid function in otherwise healthy adults. Monitor thyroid function.

Likelihood Probable Evidence D

Iodine full monograph & interactions

Thiamine1 drug type · 3 drugs

Trimethoprim (Proloprim)

Trimethoprim might increase blood levels of thiamine.
In vitro, animal, and clinical research suggest that trimethoprim inhibits intestinal thiamine transporter ThTR-2, hepatic transporter OCT1, and renal transporters OCT2, MATE1, and MATE2, resulting in paradoxically increased thiamine plasma concentrations.

Likelihood Probable Evidence B

Thiamine full monograph & interactions

L-Threonine1 drug type · 3 drugs

Nmda Antagonists

Theoretically, threonine might decrease the effects of NMDA antagonists.
Threonine increases central nervous system (CNS) glycine levels. Glycine seems to bind a site on NMDA receptors and enhance the activity of the receptors.

Likelihood Likely Evidence B

L-Threonine full monograph & interactions

Vitamin K1 drug type · 2 drugs

Warfarin (Coumadin)

Vitamin K can antagonize and reverse the therapeutic effects of warfarin.
Vitamin K antagonizes the effects of warfarin. Excessive vitamin K intake, either from supplements or from changes in the diet, can reduce the anticoagulant effect of warfarin.

Likelihood Likely Evidence C

Vitamin K full monograph & interactions

L-Lysine1 drug type · 1 drug

5-Ht4 Agonists

Theoretically, lysine may reduce the effects of 5-HT4 agonists.
Animal research suggests that L-lysine is a partial serotonin receptor 4 (5-HT4) antagonist and inhibits diarrhea induced by the 5-HT4 agonist, 5-hydroxytryptophane.

Likelihood Unlikely Evidence D

L-Lysine full monograph & interactions

The maker

Brand information

Manufacturer and brand details for Ultra Anabolic, from the product label.

Douglas Laboratories

See all Douglas Laboratories products

Name: Douglas Laboratories
Street Address: 600 Boyce Road
City: Pittsburgh
State: PA
ZipCode: 15205

Pharmacist Counseling Corner

Ultra Anabolic by Douglas Laboratories: Common Questions

Does Ultra Anabolic by Douglas Laboratories interact with any medications?

Yes. Based on its ingredients, Ultra Anabolic has a known interaction with 1,063 medications, including 10 rated major. Use the checker to see how it interacts with a specific drug.

How can one product interact with so many drugs?

Ultra Anabolic contains 26 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is responsible.

Where does this information come from?

The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.

Does this product have any ingredients without interaction data?

Yes. We could not check interaction data for phosphorus, L-leucine, L-valine, PABA, or niacin/niacinamide in this product. That doesn't mean they're safe or unsafe with your medications—just that we don't hold monograph data for them. Your pharmacist can help research those.

Is folic acid safe in this supplement during pregnancy?

Folic acid at standard prenatal doses is recommended during pregnancy to help prevent birth defects. However, some research has noted a link between folic acid use late in pregnancy and increased childhood asthma risk. Talk with your obstetrician about whether this product is appropriate for you at the dose it provides.

What are the most common side effects of the ingredients in this product?

At normal doses, most ingredients are well tolerated. Folic acid at higher doses can cause confusion, sleep disturbances, and nausea. Zinc and iron commonly cause nausea, diarrhea, and abdominal upset. Choline may cause a fishy body odor. Amino acids like tyrosine and phenylalanine can cause headache, nausea, or heartburn.

Can I take this product if I have kidney disease?

This product contains potassium, which can build up to dangerous levels in people with kidney disease. Do not take it without your doctor's approval and guidance, especially if your kidney function is reduced.

Is tyrosine in this supplement safe if I'm pregnant or breastfeeding?

No. There is not enough safety data on tyrosine supplements during pregnancy or breastfeeding, so they should be avoided unless your doctor specifically advises otherwise.

Why does the product have so many ingredients?

Ultra Anabolic is formulated as a comprehensive amino acid and micronutrient blend, likely intended to support muscle protein synthesis and metabolic function. The specific rationale for each ingredient and dose should be discussed with your healthcare provider to determine if it's appropriate for your needs.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

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Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Go deeper

The Full Monographs Behind Ultra Anabolic’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Folic Acid

Interacts with 40 drugs

Folic acid is the man-made form of vitamin B9 and is one of the most well-studied supplements, especially for preventing serious birth defects when taken before and during early pregnancy. I...

Read the full Folic Acid monograph → Herb & supplement monograph

Thiamine

Interacts with 3 drugs

Thiamine (vitamin B1) is an essential nutrient your body needs to turn food into energy and to keep your nerves and heart healthy. Most people get enough from food, but supplements are clear...

Read the full Thiamine monograph → Herb & supplement monograph

Riboflavin

Interacts with 20 drugs

Riboflavin (vitamin B2) is an essential nutrient your body needs to turn food into energy and to keep skin, eyes, and nerves healthy. It is generally very safe at typical doses, and the stro...

Read the full Riboflavin monograph → Herb & supplement monograph

Biotin

Biotin (vitamin B7) is a water-soluble vitamin your body needs to turn food into energy and to support healthy hair, skin, and nails. Most people get plenty from a normal diet, and true defi...

Read the full Biotin monograph → Herb & supplement monograph

Tyrosine

Interacts with 21 drugs

L-tyrosine is an amino acid your body uses to make brain chemicals like dopamine and norepinephrine. Some studies suggest it may help mental performance during short-term stress, sleep loss,...

Read the full Tyrosine monograph → Herb & supplement monograph

Inositol

Interacts with 86 drugs

Inositol is a sugar alcohol made naturally in the body and found in many foods, and it is sold as a supplement (often myo-inositol) mainly for PCOS, mood, and metabolic concerns. The stronge...

Read the full Inositol monograph → Herb & supplement monograph

Phenylalanine

Interacts with 16 drugs

Phenylalanine is an essential amino acid the body uses to make brain chemicals like dopamine and norepinephrine. Some people take it for mood, vitiligo, or pain, but the evidence is mostly l...

Read the full Phenylalanine monograph → Herb & supplement monograph

Vitamin K

Interacts with 2 drugs

Vitamin K is an essential nutrient your body needs for normal blood clotting and to support healthy bones. Most people get enough from food, but supplements are sometimes used for deficiency...

Read the full Vitamin K monograph → Herb & supplement monograph

Chromium

Interacts with 178 drugs

Chromium is an essential trace mineral involved in how the body handles sugar and fat. Some studies suggest it may modestly help blood sugar control in certain people with type 2 diabetes, b...

Read the full Chromium monograph → Herb & supplement monograph

Zinc

Interacts with 67 drugs

Zinc is an essential mineral that your body needs for immune function, wound healing, taste, and smell. Most people get enough from food, but supplements can help correct or prevent a defici...

Read the full Zinc monograph → Herb & supplement monograph

Pantothenic Acid

Pantothenic acid is vitamin B5, an essential nutrient your body uses to turn food into energy. True deficiency is very rare because it is found in nearly all foods, and most people meet thei...

Read the full Pantothenic Acid monograph → Herb & supplement monograph

Choline

Interacts with 16 drugs

Choline is an essential nutrient your body needs for liver function, brain health, and nerve signaling, and many people get enough from foods like eggs, meat, and fish. Supplements may help...

Read the full Choline monograph → Herb & supplement monograph

Threonine

Interacts with 3 drugs

Threonine is an essential amino acid your body needs but cannot make, so you must get it from food or supplements. Most people get plenty from a normal diet, and high-quality evidence for ta...

Read the full Threonine monograph → Herb & supplement monograph

Vitamin E

Interacts with 764 drugs

Vitamin E is an essential fat-soluble vitamin and antioxidant that most people get in adequate amounts from a normal diet. Supplements can help correct a true deficiency, but high-dose vitam...

Read the full Vitamin E monograph → Herb & supplement monograph

Lysine

Interacts with 1 drug

Lysine is an essential amino acid your body cannot make on its own, so it must come from food or supplements. People most often take extra lysine to try to prevent or shorten cold sores, but...

Read the full Lysine monograph → Herb & supplement monograph

Iodine

Interacts with 7 drugs

Iodine is an essential mineral your body needs to make thyroid hormones, and most people get enough from iodized salt, dairy, and seafood. Supplements help when you are truly deficient, but...

Read the full Iodine monograph → Herb & supplement monograph

Boron

Boron is a trace mineral found in many plant foods and sold as a supplement, mainly promoted for bone, joint, and hormone health. The human evidence for most of these uses is limited or prel...

Read the full Boron monograph → Herb & supplement monograph

Iron

Interacts with 80 drugs

Iron is an essential mineral your body needs to make hemoglobin and carry oxygen in the blood. Supplements are mainly useful for treating or preventing iron deficiency and iron-deficiency an...

Read the full Iron monograph → Herb & supplement monograph

Potassium

Interacts with 62 drugs

Potassium is an essential mineral your body needs for nerve signals, muscle function, and a steady heartbeat, and most people get enough from a balanced diet rich in fruits and vegetables. P...

Read the full Potassium monograph → Herb & supplement monograph

Molybdenum

Molybdenum is an essential trace mineral your body needs in tiny amounts to help certain enzymes work. Most people get enough from a normal diet, so supplements are rarely needed unless a do...

Read the full Molybdenum monograph →

Sources

Sources & How We Checked

Ultra Anabolic's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 489 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Folic Acid 56 references

McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
Duhra P. Treatment of gastrointestinal symptoms associated with methotrexate therapy for psoriasis. J Am Acad Dermatol 1993;28:466-9. PubMed
Morgan SL, Baggott JE, Vaughn WH, et al. Supplementation with folic acid during methotrexate therapy for rheumatoid arthritis. A double-blind, placebo-controlled trial. Ann Intern Med 1994;121:833-41. PubMed
Froscher W, Maier V, Laage M, et al. Folate deficiency, anticonvulsant drugs, and psychiatric morbidity. Clin Neuropharmacol 1995;18:165-82. PubMed
Lewis DP, Van Dyke DC, Willhite LA, et al. Phenytoin-folic acid interaction. Ann Pharmacother 1995;29:726-35. PubMed
Berg MJ, Stumbo PJ, Chenard CA, et al. Folic acid improves phenytoin pharmacokinetics. J Am Diet Assoc 1995;95:352-6. PubMed
Berg MJ, Fincham RW, Ebert BE, et al. Phenytoin pharmacokinetics: Before and after folic acid administration. Epilepsia 1992;33:712-20. PubMed
Shafer RB, Nuttall FQ. Calcium and folic acid absorption in patients taking anticonvulsant drugs. J Clin Endocrinol Metab 1975;41:1125-9. PubMed
Leeb BF, Witzmann G, Ogris E, et al. Folic acid and cyanocobalamin levels in serum and erythrocytes during low-dose methotrexate therapy of rheumatoid arthritis and psoriatic arthritis patients. Clin Exp Rheumatol 1995;13:459-63.
Morgan SL, Baggott JE, Lee JY, Alarcón GS. Folic acid supplementation prevents deficient blood folate levels and hyperhomocysteinemia during longterm, low dose methotrexate therapy for rheumatoid arthritis: implications for cardiovascular disease preventi
Dijkmans BA. Folate supplementation and methotrexate. Br J Rheumatol 1995;34:1172-4. PubMed
Segal S, Kaminski S. Drug-nutrient interactions. American Druggist 1996 Jul;42-8.
Lambie DG, Johnson RH. Drugs and folate metabolism. Drugs 1985;30:145-55. PubMed
Amer College of Rheumatology ad hoc committee on clinical guidelines. Guidelines for monitoring drug therapy in rheumatoid arthritis. Arthritis Rheum 1996;39:723-31. DOI
Suitor CW, Bailey LB. Dietary folate equivalents: interpretation and application. J Am Diet Assoc 2000;100:88-94. PubMed
Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline (2000). Washington, DC: National Academy Press, 2000. Available at: http://b
Sandoval M, Charbonnet RM, Okuhama NN, et al. Cat's claw inhibits TNFalpha production and scavenges free radicals: role in cytoprotection. Free Radic Biol Med 2000;29:71-78.
Antony AC. Megaloblastic Anemias. In: Hoffman R, Benz Jr EJ, Shattil SJ, et al. Hematology: Basic Principles and Practice. 3rd ed. New York, NY: Churchill Livingstone 2000: 451-79.
Reynolds EH. Neurological aspects of folate and vitamin B12 metabolism. Clin Haematol 1976;5:661-96. DOI
Reynolds EH. Folate metabolism and anticonvulsant therapy. Proc R Soc Med 1974;67:68.
Ortiz Z, Shea B, Suarez Almazor M, et al. Folic acid and folinic acid for reducing side effects in patients receiving methotrexate for rheumatoid arthritis (Cochrane Review). Cochrane Database Syst Rev 2000;2:CD000951. PubMed
Van Delden C, Hirschel B. Folinic acid supplements to pyrimethamine-sulfadiazine for Toxoplasma encephalitis are associated with better outcome (letter). J Infect Dis 1996;173:1294-5. PubMed
Schroder H, Clausen N, Ostergard E, Pressler T. Folic acid supplements in vitamin tablets: a determinant of hematological drug tolerance in maintenance therapy of childhood acute lymphoblastic leukemia. Ped Hematol Oncol 1986;3:241-7. PubMed
Lange H, Suryapranata H, De Luca G, et al. Folate therapy and in-stent restenosis after coronary stenting. N Engl J Med 2004;350:2673-81. PubMed
Morris MC, Evans DA, Bienias JL, et al. Dietary folate and vitamin B12 intake and cognitive decline among community-dwelling older persons. Arch Neurol 2005;62:641-5. PubMed
Bonaa KH, Njolstad I, Ueland PM, et al. NORVIT: Homocysteine lowering and cardiovascular events after acute myocardial infarction. N Enlg J Med 2006;354:1578-88. PubMed
Lawson KA, Wright ME, Subar A, et al. Multivitamin use and risk of prostate cancer in the National Institutes of Health-AARP Diet and Health Study. J Natl Cancer Inst 2007;99:754-64. PubMed
Figueiredo JC, Grau MV, Haile RW, et al. Folic acid and risk of prostate cancer: Results from a randomized clinical trial. J Natl Cancer Inst 2009;101:432-5. PubMed
Clippe C, Freyer G, Milano G, Trillet-Lenoir V. Lethal toxicity of capecitabine due to abusive folic acid prescription. Clin Oncol (R Coll Radiol) 2003;15:299-300. PubMed
Bedford Laboratories. Leucovorin calcium [package insert]. Bedford, OH. September 2008. Available at: http://www.bedfordlabs.com/BedfordLabsWeb/products/inserts/LCV-P02.pdf.
Ebbing M, Bonaa KH, Nygard O, et al. Cancer incidence and mortality after treatment with folic acid and vitamin B12. JAMA 2009;302:2119-26.
Haberg, S. E., London, S. J., Stigum, H., Nafstad, P., and Nystad, W. Folic acid supplements in pregnancy and early childhood respiratory health. Arch Dis.Child 2009;94(3):180-184. PubMed
Whitrow, M. J., Moore, V. M., Rumbold, A. R., and Davies, M. J. Effect of supplemental folic acid in pregnancy on childhood asthma: a prospective birth cohort study. Am J Epidemiol. 12-15-2009;170(12):1486-1493. PubMed
Collin, S. M., Metcalfe, C., Refsum, H., Lewis, S. J., Zuccolo, L., Smith, G. D., Chen, L., Harris, R., Davis, M., Marsden, G., Johnston, C., Lane, J. A., Ebbing, M., Bonaa, K. H., Nygard, O., Ueland, P. M., Grau, M. V., Baron, J. A., Donovan, J. L., Nea
Baggott, J. E., Oster, R. A., and Tamura, T. Meta-analysis of cancer risk in folic acid supplementation trials. Cancer Epidemiol. 2012;36(1):78-81. PubMed
Fonseca VA, Lavery LA, Thethi TK, et al. Metanx in type 2 diabetes with peripheral neuropathy: A randomized trial. Am J Med 2013;126(2):141-9. PubMed
Hankey GJ, Eikelboom JW, Yi Q, et al. Treatment with B vitamins and incidence of cancer in patients with previous stroke or transient ischemic attack: Results of a randomized placebo-controlled trial. Stroke 2012;43(6):1572-7. PubMed
Taneja S, Strand TA, Kumar T, et al. Folic acid and vitamin B-12 supplementation and common infections in 6-30-mo-old children in India: a randomized placebo-controlled trial. Am J Clin Nutr 2013;98(3):731-7. PubMed
van Wijngaarden JP, Swart KM, Enneman AW, et al. Effect of daily vitamin B-12 and folic acid supplementation on fracture incidence in elderly individuals with an elevated plasma homocysteine concentration: B-PROOF, a randomized controlled trial. Am J Clin
Qin X, Fan F, Cui Y, Chen F, Chen Y, Cheng X, Li Y, Wang B, Xu X, Xu X, Huo Y, Wang X. Folic acid supplementation with and without vitamin B6 and revascularization risk: a meta-analysis of randomized controlled trials. Clin Nutr. 2014;33(4):603-12. PubMed
Crider KS, Cordero AM, Qi YP, Mulinare J, Dowling NF, Berry RJ. Prenatal folic acid and risk of asthma in children: a systematic review and meta-analysis. Am J Clin Nutr. 2013;98(5):1272-81. PubMed
Matsubara S, Imai K, Murayama K, Higashizawa T. Severe liver dysfunction during nausea and vomiting of pregnancy: folic acid supplement as a suggested culprit. J Obstet Gynaecol. 2012;32(7):701-2. PubMed
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Thiamine 7 references

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Riboflavin 5 references

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Biotin 4 references

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Tyrosine 4 references

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Inositol 14 references

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Phenylalanine 23 references

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Vitamin K 11 references

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Chromium 53 references

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Zinc 88 references

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Pantothenic Acid 11 references

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Choline 14 references

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Threonine 4 references

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Iodine 26 references

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Boron 6 references

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Iron 72 references

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Potassium 12 references

McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
Gennaro A. Remington: The Science and Practice of Pharmacy. 19th ed. Lippincott: Williams & Wilkins, 1996.
Whelton PK, He J, Cutler JA, et al. Effects of oral potassium on blood pressure. Meta-analysis of randomized controlled clinical trials. JAMA 1997;277:1624-32. PubMed
Phillips, C. O., Kashani, A., Ko, D. K., Francis, G., and Krumholz, H. M. Adverse effects of combination angiotensin II receptor blockers plus angiotensin-converting enzyme inhibitors for left ventricular dysfunction: a quantitative review of data from ra DOI
Altieri, P. I., Herrero, C., Suero, R., and Ortiz, A. Bleeding duodenal ulcer in a patient taking slow-releasing potassium tablets. Bol.Asoc.Med P.R. 1977;69(8):276.
Raf, L. E. Enteric-coated potassium chloride tablets and ulcer of the small intestine. Acta Chir Scand Suppl 1967;(374):1-87.
Potassium chloride oral solution [package insert]. Allentown, PA: Lehigh Valley Technologies, Inc.; 2014.
Potassium chloride injection [package insert]. Lake Forest, IL: Hospira Inc.; 2009.
Patel RB, Tannenbaum S, Viana-Tejedor A, et al. Serum potassium levels, cardiac arrhythmias, and mortality following non-ST-elevation myocardial infarction or unstable angina: insights from MERLIN-TIMI 36. Eur Heart J Acute Cardiovasc Care 2017 Feb;6(1):1 PubMed
Malta D, Arcand J, Ravindran A, Floras V, Allard JP, Newton GE. Adequate intake of potassium does not cause hyperkalemia in hypertensive individuals taking medications that antagonize the renin angiotensin aldosterone system. Am J Clin Nutr 2016 Oct;104(4 PubMed
Keskin M, Kaya A, Tatlisu MA, et al. The effect of serum potassium level on in-hospital and long-term mortality in ST elevation myocardial infarction. Int J cardiol. 2016 Oct 15;221:505-10.
Stallings VA, Harrison M, Oria M; Committee to Review the Dietary Reference Intakes for Sodium and Potassium, Food and Nutrition Board, Health and Medicine Division, National Academies of Sciences, Engineering, and Medicine. Washington (DC): National Acad

See these in context on the Potassium monograph →

Molybdenum 8 references

Chan S, Gerson B, Subramaniam S. The role of copper, molybdenum, selenium, and zinc in nutrition and health. Clin Lab Med 1998;18:673-85. DOI
Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc. Washington, DC: National Academy Press, 2002.
Rajagopalan KV. Molybdenum: an essential trace element in human nutrition. Annu Rev Nutr 1988;8:401-27. PubMed
Selden AI, Berg NP, Soderbergh A, Bergstrom BE. Occupational molybdenum exposure and a gouty electrician. Occup Med (Lond) 2005;55:145-8. PubMed
Al-Saleh E, Nandakumaran M, Al-Shammari M, Al-Harouny A. Maternal-fetal status of copper, iron, molybdenum, selenium and zinc in patients with gestational diabetes. J Matern Fetal Neonatal Med 2004;16:15-21. PubMed
Koster R, Vieluf D, Kiehn M, et al. Nickel and molybdenum contact allergies in patients with coronary in-stent restenosis. Lancet 2000;356:1895-7. PubMed
Vyskocil A, Viau C. Assessment of molybdenum toxicity in humans. J Appl Toxicol 1999;19:185-92. DOI
Momcilovic, B. A case report of acute human molybdenum toxicity from a dietary molybdenum supplement--a new member of the "Lucor metallicum" family. Arh.Hig.Rada Toksikol. 1999;50(3):289-297. DOI

See these in context on the Molybdenum monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

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Ultra Anabolic Ingredients & Drug Interactions

Check Your Meds Against Ultra Anabolic by Douglas Laboratories

HelloPharmacist Scorecard of Ultra Anabolic by Douglas Laboratories

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Meds to double-check

The bottom line

General information

Supplement Facts

Supplement Facts

Ultra Anabolic by Douglas Laboratories label

The Ingredients in Ultra Anabolic by Douglas Laboratories

Phosphorus

L-Leucine

L-Isoleucine

L-Valine

PABA

Niacin/Niacinamide

Ultra Anabolic by Douglas Laboratories Drug Interactions

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Ingredients driving the most interactions

Individual Drug Interactions

Each ingredient & the kinds of drugs it affects

Vitamin E8 drug types · 764 drugs

Chromium5 drug types · 178 drugs

Inositol1 drug type · 86 drugs

Iron13 drug types · 80 drugs

Zinc10 drug types · 67 drugs

Potassium3 drug types · 62 drugs

Folic Acid7 drug types · 40 drugs

L-Tyrosine2 drug types · 21 drugs

Riboflavin1 drug type · 20 drugs

L-Phenylalanine3 drug types · 16 drugs

Choline1 drug type · 16 drugs

Iodine3 drug types · 7 drugs

Thiamine1 drug type · 3 drugs

L-Threonine1 drug type · 3 drugs

Vitamin K1 drug type · 2 drugs

L-Lysine1 drug type · 1 drug

Brand information

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Ultra Anabolic by Douglas Laboratories: Common Questions

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The Full Monographs Behind Ultra Anabolic’s Ingredients

Folic Acid

Thiamine

Riboflavin

Biotin

Tyrosine

Inositol

Phenylalanine

Vitamin K

Chromium

Zinc

Pantothenic Acid

Choline

Threonine

Vitamin E

Lysine

Iodine

Boron

Iron

Potassium

Molybdenum

Sources & How We Checked

The 489 references behind this product’s interaction data