Major interaction on record — check this product against your medications before combining. Based on 16 of 21 ingredients. Check your meds →
Dietary supplement

Monster Milk Chocolate Ingredients & Drug Interactions

by CytoSport

Monster Milk Chocolate label
See full label image
Powder Category: Other Combinations
Most serious interaction: Major
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Monster Milk Chocolate 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

Monster Milk Chocolate is a dietary supplement by CytoSport with 21 active ingredients. Its ingredients are commonly taken for muscle recovery and sports performance, gut health and 'leaky gut', recovery from severe illness or injury.Based on those ingredients, 2,146 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Dietary Fiber, Niacin, Vitamin B6. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Monster Milk Chocolate by CytoSport

Ask about any prescription or over-the-counter medication and we check it for interactions with Monster Milk Chocolate by CytoSport — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Monster Milk Chocolate by CytoSport

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 21 of its 21 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

Monster Milk Chocolate contains 20 active ingredients. The main components are whey protein peptides enriched with leucine to support muscle recovery and strength, plus amino acids (L-glutamine and L-leucine) that support muscle tissue.

You'll also find B vitamins—B6, B12, thiamine, niacin, and riboflavin—that help convert food to energy. Minerals include calcium, potassium, phosphorus, sodium, and chromium, which support bone health, electrolyte balance, and blood sugar regulation.

Additional actives are betaine anhydrous (supports muscle function), creatine monohydrate (supports strength and muscle), beta-alanine under the brand CarnoSyn (for athletic performance), and protease enzymes (to aid protein digestion). The product also contains inactive ingredients like sustained-release and rapid-release protein blends, cocoa powder, oils, and various sweeteners and thickeners.

Does it work?

Moderate 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
Moderate

Some clinical evidence supports this product's ingredients for its stated purpose, but it isn't conclusive.

Why this rating?
  • The label markets this product for: muscle recovery and growth in athletes.
  • We looked for evidence on: Athletic performance, Muscle strength, Muscle hypertrophy, Exercise recovery.
  • The strongest evidence on file: Whey Protein is rated "Possibly Effective" for Athletic performance (Natural Medicines).
  • Also on file: Creatine is rated "Possibly Effective" for Athletic performance, Muscle strength.
  • Also on file: Beta-alanine is rated "Possibly Effective" for Athletic performance.

The evidence for Monster Milk Chocolate's individual ingredients is mixed. Whey protein and creatine are possibly effective for athletic performance and muscle strength.

L-glutamine is possibly effective for postoperative recovery and critical illness support, and effective for sickle cell disease. Beta-alanine (CarnoSyn) is possibly effective for athletic and physical performance.

For other intended uses—bone health from calcium (likely effective for osteoporosis), energy support from B vitamins, and blood sugar control from chromium—the evidence ranges from possibly effective to insufficient data. Betaine anhydrous is effective for homocystinuria but shows insufficient evidence for other common uses.

The evidence, ingredient by ingredient Glutamine Black Psyllium Vitamin B6 Sodium Vitamin B12 Potassium Calcium Riboflavin

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 16 of the 16 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 16 of 16.
  • General safety write-ups exist for 16 of 16.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Most of these ingredients are generally well tolerated at the amounts found in this product. However, several carry caveats.

Glutamine is well tolerated in healthy adults but requires medical supervision in kidney or liver disease; high doses can cause gastrointestinal upset, dizziness, and rare neurological effects in people with bipolar disorder. Vitamin B6 is safe at normal amounts, but high doses over time can damage nerves (peripheral neuropathy).

Sodium is essential in small amounts, but this product's sodium content should be monitored in people on blood pressure medications or with heart or kidney conditions. Potassium poses a serious risk of dangerously high blood levels in people with kidney disease or taking certain medications.

Calcium is well tolerated at recommended doses but can cause kidney stones and constipation at high levels. Niacin commonly causes flushing and gastrointestinal upset; high doses risk liver damage.

Chromium is usually well tolerated but rare serious effects include kidney damage and rhabdomyolysis. Creatine typically causes water retention, muscle cramps, and gastrointestinal upset but is not well studied in people with kidney disease.

Beta-alanine commonly causes harmless tingling and flushing of the skin. Whey protein is well tolerated by most but can trigger or worsen acne, especially in younger people.

Side effects, ingredient by ingredient Glutamine Black Psyllium Vitamin B6 Sodium Vitamin B12 Potassium Calcium Riboflavin

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?
  • 12 of the 16 matched ingredients can interact with medications — Black Psyllium, Calcium, Whey Protein, Potassium, Glutamine, among others.
  • The most serious interaction on file is rated Major.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; seizure medications; diabetes medications; heart-rhythm medications; lithium; Parkinson's medications.
  • For scale: 2,147 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.

Before taking this product, double-check your medications against these categories: HIV integrase inhibitors (dolutegravir, elvitegravir), the antibiotic ceftriaxone, anticonvulsants, blood pressure medications, diabetes and insulin drugs, blood thinners and antiplatelet drugs, potassium-sparing diuretics, ACE inhibitors or ARBs, levodopa (Parkinson's medication), quinolone and tetracycline antibiotics, thyroid hormone (levothyroxine), certain heart medications, and gout medications (allopurinol, probenecid). If you take any of these, run them through the interaction checker on this page before you start.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Major medication interactions have been identified, and safety information is well characterized.

Monster Milk Chocolate is a multi-ingredient protein and supplement powder designed for muscle recovery, energy, and athletic performance. It's generally well tolerated by healthy adults.

However, if you take any prescription medication—especially for blood pressure, diabetes, thyroid, HIV, blood clotting, or seizures—talk to your pharmacist before using this product, as several of its ingredients interact with common drugs. People with kidney disease should be especially cautious and check with their doctor first.

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

Assessment coverage: 16 of 21 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Mar 25, 2015.

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 Monster Milk Chocolate, straight from the product label.

Brand CytoSport
Barcode (UPC) 660726790205
Net contents 33 oz.; 2.06 lbs; 936 Gram(s)
Market status On market
Date entered into DSLD Mar 25, 2015
DSLD ID 43877
Product type Other Combinations
Supplement form Powder
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten 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 Monster Milk Chocolate by CytoSport, 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:
78 Gram(s)
Maximum serving Sizes:
78 Gram(s)
Servings per container
12
UPC/BARCODE
660726790205
IngredientAmount% DV
Calories280 {Calories}--
Total Carbohydrates9 Gram(s)3%
L-Glutamine4 Gram(s)--
Sugar4 Gram(s)--
Calories from Fat40 {Calories}--
Total Fat4.5 Gram(s)7%
Dietary Fiber2 Gram(s)8%
Vitamin B64 mg200%
Protein50 Gram(s)100%
Saturated Fat2 Gram(s)10%
Polyunsaturated Fat1 Gram(s)--
Sodium105 mg4%
Vitamin B1230 mcg500%
Potassium690 mg20%
Cholesterol45 mg15%
Phosphorus600 mg60%
Calcium700 mg70%
Monounsaturated Fat1.5 Gram(s)--
Riboflavin1.7 mg100%
L-Leucine4 Gram(s)--
Thiamine1.5 mg100%
Niacin20 mg100%
Folate400 mcg100%
CarnoSyn1 Gram(s)--
Betaine Anhydrous2.5 Gram(s)--
Chromium120 mcg100%
Creatine Monohydrate3 Gram(s)--
Leucine-Enriched Whey Peptides1 Gram(s)--
Protease Enzymes125 mg--

Other ingredients: Sustained Released Protein Blend, Rapid Release Protein Blend, alkalized Cocoa powder, Natural and Artificial flavors, Sunflower Oil, Inulin, Potassium Chloride, Maltodextrin, Soy Lecithin, Canola Oil, Medium Chain Triglycerides, Acesulfame Potassium, Gum Blend, Sucralose, Stevia extract

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.
General Statements

SPECIALLY DESIGNED mTOR ACTIVATION FORMULA Research confirms what many athletes already know: regular exercise and high quality protein can work together to promote muscle recovery and growth.

3 LEUCINE:1 ISOLEUCINE:1 VALINE Peer-reviewed scientific studies demonstrate that leucine activates the mTOR signaling pathway, which stimulates muscle hypertrophy (growth).

Monster Milk has 50% more Leucine (per gram protein) than is naturally present in casein or whey protein.

ESSENTIAL BCAA L-Isoleucine 2,200mg BCAA L-Leucine 8,035mg BCAA L-Valine 2,435mg L-Tryptophan 570mg L-Lysine 3,270mg L-Threonine 1,655mg L-Phenylalanine 1,760mg L-Histidine 965mg L-Methionine 885mg NON - ESSENTIAL AMINO ACIDS TYPICAL PROFILE PER 2 SCOOPS (50g PROTEIN) L-Alanine 1,425mg L-Arginine 1125mg L-Glycine 1990mg L-Aspartic Acid 3,285mg L-Glutamine & Presursors 11,830mg L-Cysteine 930mg L-Tyrosine 1,760mg L-Proline 3,780mg L-Serine 2,100mg Red=OXYGEN Blue=NITROGEN White=HYDROGEN Black=CARBON Yellow=SULFUR

{Chart} Higher Amino Acid Plasma Levels Baseline Time (hours) 0 1 2 3 4 5 Whey Casein TYPICAL PLASMA AMINO ACID LEVELS FOLLOWING PROTEIN CONSUMPTION2 2Summary of results from casein and whey feeding studies. Studies used larger doses than found in Monster Milk. For additional information see Boirie et al Proc Natl Acad Sci 94:14930-35 (1997); Dangin et al Am J Phys Endo Met 280:E340-48 (2001); Tang et al J Appl Physiol 107:987-92 (2009)

SUPPORTS MUSCLE MASS AND STRENGTH

MOST ABUNDANT AMINO ACID IN HUMAN MUSCLE

SUPPORTS THE NORMAL DIGESTION OF PROTEIN WHICH YIELDS AMINO ACIDS, THE BUILDING BLOCKS OF MUSCLE PROTEIN3

RATE LIMITING FACTOR FOR CARNOSINE PRODUCTION, WHICH CAN ACT AS A BUFFER TO REDUCE ACIDITY IN MUSCLE DURING HIGH-INTENSITY EXERCISE

3Results from study with whey protein and in vitro experiments using whey proteins and Monster Milk demonstrate ProHydrolase breaks down proteins into smaller peptides and individual amino acids.

Over the years, we’ve expanded to create a comprehensive product line that encompasses the athletic experience from preparation, to hydration, to recovery.

We carefully manufacture our powder products onsite at our corporate campus in Benicia, California. Making efficacious products for athletes and active lifestyle individuals requires responsibility on all fronts. As our business has grown, so has our footprint. We have made environmental sustainability a focus and driver in everyday decision making. For more information,please visit our website.

The CytoSport Team

TASTE SATISFACTION GUARANTEED

NATURALLY AND ARTIFICIALLY FLAVORED

PRE ~ DURING ~ POST

PLEASE RECYCLE

{FLAG} MADE IN USA

MONSTER MILK can be used either before workouts, after workouts or prior to bed time. Individual nutritional requirements vary depending on gender, body weight, level of activity and exercise/training intensity. CytoSport products complement a smart eating and hydration plan, that when combined with a balanced exercise or resistance training program, may contribute to weight management and recovery from exercise. Use as part of a well-balanced diet that includes whole foods and other protein sources.

Brand IP Statement(s)

We designed MONSTER MILK(R) to help hard-working athletes build bigger, stronger muscles.

125MG Pro Hydrolase(R)

CarnoSyn(TM) Carosine Synthesizer

Since we founded CytoSport(R) in 1998, we’ve been dedicated to working with sports scientists,coaches and trainers to redefine protein enhanced products for serious athletes and active lifestyle individuals – supporting performance when it matters.

Our plant is a NSF International GMP for Sport(R) Registered facility, inspected and regulated by the FDA.

Through it all, CytoSport has been committed to one thing, Building Athletes from the Inside Out(TM)

BUILDING ATHLETES FROM THE INSIDE OUT(TM)

(C) 2014 CYTOSPORT, INC.

ProHydrolase(R) is a registered trademark of Deerland Enzymes, Inc. PepForm(R) is a registered trademark of Glanbia PLC. Creapure(R) is a licensed registered trademark of AlzChem Trostberg GmbH Licensed under one or more of U.S. Pat. Nos. 5,965,596, 6,426,361 and 7,504,376, each of which is owned by Natural Alternatives International, Inc. (NAI). NAI is also the owner of the registered trademark CarnoSyn(R).

Our products are tested for athletic banned substances in compliance with the NSF International Certified for Sport(R) program, which includes semi-annual facility audits, verifying that no NSF 306-Certification Guideline Annex A List banned substances exist in our facility.

Formula

MORE THAN 50% EXTRA LEUCINE1 MONSTER MILK INCLUDES LEUCINE, FROM FREE AMINO ACIDS, WHOLE PROTEINS AND LEUCINE-ENRICHED WHEY PEPTIDES PEPFORM(R) TO SUPPLY A 3:1:1 RATIO OF BRANCHED CHAIN AMINO ACIDS (BCAA’S)

50g PROTEIN MATRIX Monster Milk contains a combination of slow (casein) and fast (whey) proteins to enhance muscle protein synthesis and inhibit muscle protein breakdown. The amino acids in whey and free-form amino acids are metabolized more rapidly than those from casein which provide a slower more sustained release of amino acids.

3g Creapure(R) 2.5g BETAINE ANHYDROUS

4g ADDED L-GLUTAMINE

1g Beta-Alanine

50g LEAN PROTEIN 3g Creapure(R) CREATINE MONOHYDRATE 125mg PROHYDROLASE(R) DIGESTIVE ENZYMES

CONTAINS INGREDIENTS DERIVED FROM MILK AND SOY.

NUTRITION HIGHLIGHTS 50g PROTEIN L-GLUTAMINE & GLUTAMINE PRECURSORS 11.8g CALORIES 280 L-LEUCINE 8.0g CARBS 9g L-ISOLEUCINE 2.2g CREATINE 3g L-VALINE 2.4g Includes amino acids from complete proteins

FDA Statement of Identity

LEAN MUSCLE PROTEIN SUPPLEMENT

Formulation

FREE OF BANNED SUBSTANCES

GLUTEN FREE

Seals/Symbols

NSF(R) Certified for Sport(R) www.nsf.org

Precautions

CONTAINS INGREDIENTS DERIVED FROM MILK AND SOY.

THIS PRODUCT IS MANUFACTURED IN A FACILITY THAT PROCESSES MILK, SOY, WHEAT AND EGGS.

NOTICE: USE THIS PRODUCT AS A FOOD SUPPLEMENT ONLY. DO NOT USE FOR WEIGHT REDUCTION.

General

L-79020-REV09.01/14

Suggested/Recommended/Usage/Directions

DIRECTIONS and USE {Bottle} 16 FL-OZ Mix 2 scoops (78g) into 16 fl-oz water {2 scoops} RECOMMENDED USAGE FOR INDIVIDUALS LOOKING TO BUILD SIZE AND GAIN MUSCLE MASS: Mix 3/4 cup (78g) (2 rounded scoops) into 16 fl. oz. / day. NOTICE: Consume within 15-20 minutes after mixing with water to prevent flavor degradation from the action of the digestive enzymes.

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to treat, cure, prevent or diagnose any disease.

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

See for yourself

Monster Milk Chocolate by CytoSport label

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

Monster Milk Chocolate label

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 Monster Milk Chocolate by CytoSport

These are the 21 active ingredients this product is made of. Select any to open its full monograph.

Serving size78 Gram(s) Dosage formPowder Servings per container12 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.

L-Glutamine

Interacts with
50 drugs
4 Gram(s) per serving

Glutamine is the most abundant amino acid in the body and is usually made in your muscles. A prescription form is FDA-approved to help reduce sickle c...

L-Glutamine monograph & interactions

Sugar

4 Gram(s) per serving

Dietary Fiber

Interacts with
2,025 drugs
2 Gram(s) per serving

Black psyllium is a soluble-fiber supplement made from the seeds of a Plantago plant, used mostly to ease constipation and support digestive health. I...

Dietary Fiber monograph & interactions

Vitamin B6

Interacts with
210 drugs
4 mg per serving Form: Pyridoxine Hydrochloride

Vitamin B6 (pyridoxine) is an essential water-soluble vitamin that your body needs for metabolism, brain function, and making red blood cells. It is b...

Vitamin B6 monograph & interactions

Protein

50 Gram(s) per serving

Sodium

Interacts with
205 drugs
105 mg per serving

Sodium is an essential mineral and electrolyte your body needs to balance fluids, support nerves, and help muscles work. Most people in modern diets g...

Sodium monograph & interactions

Vitamin B12

Interacts with
20 drugs
30 mcg per serving Form: Cyanocobalamin

Vitamin B12 (cobalamin) is an essential nutrient your body needs to make red blood cells, keep nerves healthy, and support DNA. Supplements are very h...

Vitamin B12 monograph & interactions

Potassium

Interacts with
62 drugs
690 mg per serving

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

Phosphorus

600 mg per serving

Calcium

Interacts with
168 drugs
700 mg per serving

Calcium is an essential mineral your body needs for strong bones, nerve signaling, and muscle function, and supplements can help fill gaps when diet f...

Calcium monograph & interactions

Riboflavin

Interacts with
20 drugs
1.7 mg per serving

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

L-Leucine

4 Gram(s) per serving

Thiamine

Interacts with
3 drugs
1.5 mg per serving Form: Thiamine Mononitrate

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

Niacin

Interacts with
727 drugs
20 mg per serving Form: Niacinamide

Niacin (vitamin B3) is an essential nutrient your body needs for energy and metabolism, and deficiency is uncommon in most developed countries. Prescr...

Niacin monograph & interactions

Folate

400 mcg per serving Form: Folic Acid

CarnoSyn

No known
interactions
1 Gram(s) per serving Form: Beta-Alanine

Beta-alanine is an amino acid taken mostly by athletes to raise muscle carnosine, which may help buffer acid and reduce fatigue during short, high-int...

CarnoSyn monograph & interactions

Betaine Anhydrous

No known
interactions
2.5 Gram(s) per serving

Betaine anhydrous (also called trimethylglycine) is a compound found in foods like beets, spinach, and whole grains, and is sold as a supplement and a...

Betaine Anhydrous monograph & interactions

Chromium

Interacts with
178 drugs
120 mcg per serving Form: Chromium Nicotinate

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

Creatine Monohydrate

No known
interactions
3 Gram(s) per serving

Creatine is one of the most studied sports supplements, with solid evidence that it can boost strength and performance during short, high-intensity ac...

Creatine Monohydrate monograph & interactions

Leucine-Enriched Whey Peptides

Interacts with
53 drugs
1 Gram(s) per serving

Whey protein is a high-quality, complete protein made from cow's milk that can help people meet protein needs and support muscle growth when combined...

Leucine-Enriched Whey Peptides monograph & interactions

Protease Enzymes

No known
interactions
125 mg per serving Form: ProHydrolase(R)

Proteolytic enzymes are proteins that help break down other proteins, and common examples include bromelain (from pineapple), papain (from papaya), tr...

Protease Enzymes monograph & interactions

Other (inactive) ingredients: Sustained Released Protein Blend, Rapid Release Protein Blend, Alkalized Cocoa powder, Natural and Artificial flavors, Sunflower Oil, Inulin, Potassium Chloride, Maltodextrin, Soy Lecithin, Canola Oil, Medium Chain Triglycerides, Acesulfame Potassium, Gum Blend, Sucralose, Stevia extract. These complete the product’s ingredient list but are not active constituents.

Interaction report

Monster Milk Chocolate by CytoSport Drug Interactions

Want to check YOUR meds against Monster Milk Chocolate?

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
2,146Drugs
12 Major 870 Moderate 1,264 Minor

Ingredients driving the most interactions

Dietary Fiber 2,025
Niacin 727
Vitamin B6 210
Sodium 205
Chromium 178

Individual Drug Interactions

The ingredients in Monster Milk Chocolate interact with 2,146 drugs. Click any drug to see the details.

12 of the 21 ingredients in Monster Milk Chocolate interact with drugs. Each result below shows which ingredient is responsible. Dietary Fiber Niacin Vitamin B6 Sodium Chromium Calcium Potassium Leucine-Enriched Whey Peptides L-Glutamine Vitamin B12 Riboflavin Thiamine

Each ingredient & the kinds of drugs it affects

For each ingredient in Monster Milk Chocolate 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.

Dietary Fiber7 drug types · 2,025 drugs

Carbamazepine (Tegretol)

Theoretically, black psyllium might reduce the effects of carbamazepine and increase the risk for convulsions.
Theoretically, black psyllium might reduce carbamazepine absorption. A preliminary study using blond psyllium reported decreased carbamazepine bioavailability due to binding of the drug to psyllium, as well as reduction of available fluid in the gut for dissolution of the drug. This interaction may also occur with black psyllium.

Likelihood Probable Evidence D
Lithium

Theoretically, taking black psyllium at the same time as lithium might reduce lithium absorption.
The fiber in black psyllium might reduce lithium absorption and plasma levels. Some case reports describe a reduction in plasma lithium levels with concomitant administration of blond psyllium. This was reversed when psyllium was stopped. This interaction may also occur with black psyllium.

Likelihood Probable Evidence D
Metformin (Glucophage)

Theoretically, black psyllium might increase the therapeutic and adverse effects of metformin.
Animal research shows that concurrent consumption of blond psyllium with metformin slows and increases the absorption of metformin. This interaction may also occur with black psyllium. To avoid changes in absorption, take psyllium 30-60 minutes after metformin.

Likelihood Possible Evidence D
Olanzapine (Zyprexa)

Theoretically, taking black psyllium at the same time as olanzapine might reduce olanzapine absorption.
The fiber in black psyllium might decrease the absorption of olanzapine. A single case report describes a reduction in the effectiveness of olanzapine when it was concomitantly administered with an unspecified type of psyllium 3 grams orally twice daily. This effect was reversed when psyllium was stopped.

Likelihood Possible Evidence D
Digoxin (Lanoxin)

Theoretically, taking black psyllium at the same time as digoxin might reduce digoxin absorption and decrease digoxin levels.
Psyllium might bind digoxin in the gut. However, some clinical evidence suggests that psyllium does not impact digoxin absorption.

Likelihood Unlikely Evidence B
Ethinyl Estradiol

Theoretically, taking black psyllium at the same time as ethinyl estradiol might alter levels of estradiol.
Concurrent use of blond psyllium with ethinyl estradiol results in a slight increase in the extent of ethinyl estradiol absorption and a slower rate of absorption. This is unlikely to be clinically significant.

Likelihood Unlikely Evidence D
Oral Drugs

Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Psyllium seems to have variable effects on drug absorption. To avoid changes in absorption, take psyllium 30-60 minutes after oral medications. Animal research shows that blond psyllium delays and increases the absorption of metformin and ethinyl estradiol. Case reports and animal research suggest that blond psyllium might reduce absorption of lithium, digoxin, olanzapine, and carbamazepine. Finally, some pharmacokinetic studies show that psyllium does not affect the absorption of levothyroxine or warfarin. Although many of these studies evaluated blond psyllium, the fiber content in black psyllium may have similar effects.

Likelihood Possible Evidence B
Dietary Fiber full monograph & interactions

Niacin15 drug types · 727 drugs

Alcohol (Ethanol)

Concomitant use of alcohol and niacin might increase the risk of flushing and hepatotoxicity.
Alcohol can exacerbate the flushing and pruritus associated with niacin. Large doses of niacin might also exacerbate liver dysfunction associated with chronic alcohol use. A case report describes delirium and lactic acidosis in a patient taking niacin 3 grams daily who ingested 1 liter of wine. Advise patients to avoid large amounts of alcohol while taking niacin.

Likelihood Probable Evidence D
Allopurinol (Zyloprim)

Theoretically, niacin might antagonize the therapeutic effects of uricosurics such as allopurinol.
Large doses of niacin can reduce urinary excretion of uric acid, potentially resulting in hyperuricemia. Doses of uricosurics such as allopurinol might need to be increased to maintain control of gout in patients who start taking niacin. People who have frequent attacks of gout despite uricosuric therapy should avoid niacin.

Likelihood Probable Evidence C
Anticoagulant/Antiplatelet Drugs

Theoretically, niacin may have additive effects when used with anticoagulant or antiplatelet drugs.
Several cases of clotting factor synthesis deficiency and coagulopathy have been reported in patients taking sustained-release niacin. Also, thrombocytopenia has been reported in patients treated with niacin or niacin plus lovastatin.

Likelihood Possible Evidence D
Antidiabetes Drugs

Niacin can increase blood glucose levels and may diminish the effects of antidiabetes drugs.
Niacin impairs glucose tolerance in a dose-dependent manner, probably by causing or aggravating insulin resistance and increasing hepatic production of glucose. In diabetes patients, niacin 4.5 grams daily for 5 weeks can increase plasma glucose by an average of 16% and glycated hemoglobin (HbA1c) by 21%. However, lower doses of 1.5 grams daily or less appear to have minimal effects on blood glucose. In some patients, glucose levels increase when niacin is started, but then return to baseline when a stable dose is reached. Up to 35% of patients with diabetes may need adjustments in hypoglycemic therapy when niacin is added.

Likelihood Probable Evidence B
Antihypertensive Drugs

Theoretically, niacin may increase the risk of hypotension when used with antihypertensive drugs.
The vasodilating effects of niacin can cause hypotension. Furthermore, some clinical evidence suggests that a one-hour infusion of niacin can reduce systolic, diastolic, and mean blood pressure in hypertensive patients. This effect is not observed in normotensive patients.

Likelihood Possible Evidence B
Bile Acid Sequestrants

Bile acid sequestrants can bind niacin and decrease absorption. Separate administration by 4-6 hours to avoid an interaction.
In vitro studies show that colestipol (Colestid) binds about 98% of available niacin and cholestyramine (Questran) binds 10% to 30%.

Likelihood Possible Evidence D
Gemfibrozil (Lopid)

Theoretically, concomitant use of niacin and gemfibrozil might increase the risk of myopathy in some patients.
A case of myopathy from concomitant use of niacin and gemfibrozil has been reported. Niacin alone has also been associated with cases of myopathy. Using gemfibrozil with niacin might further increase the risk of developing myopathy.

Likelihood Possible Evidence D
Hepatotoxic Drugs

Theoretically, concomitant use of niacin and hepatotoxic drugs might increase the risk of hepatotoxicity.
Niacin has been associated with cases of liver toxicity, especially when used in pharmacologic doses. Sustained-release niacin preparations appear to be associated with a higher risk of hepatotoxicity than immediate-release niacin.

Likelihood Possible Evidence D
Hmg-Coa Reductase Inhibitors ("Statins")

Theoretically, concomitant use of niacin and statins might increase the risk of myopathy and rhabdomyolysis in some patients.
Some case reports have raised concerns that niacin might increase the risk of myopathy and rhabdomyolysis when combined with statins. However, a significantly increased risk of myopathy has not been demonstrated in clinical trials, including those using an FDA-approved combination of lovastatin and niacin (Advicor).

Likelihood Possible Evidence D
Probenecid (Benemid)

Theoretically, niacin might antagonize the therapeutic effects of uricosurics such as probenecid.
Large doses of niacin reduce urinary excretion of uric acid, potentially causing hyperuricemia. Doses of uricosurics such as probenecid might need to be increased to maintain control of gout in patients who start taking niacin. People who have frequent attacks of gout despite uricosuric therapy should avoid niacin.

Likelihood Probable Evidence C
Sulfinpyrazone (Anturane)

Theoretically, niacin might antagonize the therapeutic effects of uricosurics such as sulfinpyrazone.
Large doses of niacin reduce urinary excretion of uric acid, potentially causing hyperuricemia. Doses of uricosurics such as sulfinpyrazone might need to be increased to maintain control of gout in patients who start taking niacin. People who have frequent attacks of gout despite uricosuric therapy should avoid niacin.

Likelihood Probable Evidence C
Thyroid Hormone

Theoretically, niacin might antagonize the therapeutic effects of thyroid hormones.
Clinical research and case reports suggests that taking niacin can reduce serum levels of thyroxine-binding globulin by up to 25% and moderately reduce levels of thyroxine (T4). Patients taking thyroid hormone for hypothyroidism might need dose adjustments when using niacin.

Likelihood Probable Evidence D
Transdermal Nicotine (Nicoderm)

Theoretically, concomitant use of niacin and transdermal nicotine might increase the risk of flushing and dizziness.
Niacin and nicotine can both cause flushing and dizziness.

Likelihood Possible Evidence D
Warfarin (Coumadin)

There is limited evidence that niacin may increase the anticoagulant effects of warfarin.
In a case report, a patient on warfarin developed an elevated international normalized ratio (INR) of 3.9 after taking niacin for two weeks. The patient's INR was previously stable, ranging between 2 and 3 in recent months, and no other medication changes were identified. The elevated INR returned to therapeutic range within 4 days following the discontinuation of niacin.

Likelihood Possible Evidence D
Aspirin

Large doses of aspirin might alter the clearance of niacin.
Aspirin is often used with niacin to reduce niacin-induced flushing. Doses of 80-975 mg aspirin have been used, but 325 mg appears to be optimal. Aspirin also seems to reduce the clearance of niacin by competing for glycine conjugation. Taking aspirin 1 gram seems to reduce niacin clearance by 45%. This is probably a dose-related effect and not clinically significant with the more common aspirin dose of 325 mg.

Likelihood Likely Evidence B
Niacin full monograph & interactions

Vitamin B65 drug types · 210 drugs

Amiodarone (Cordarone)

Theoretically, vitamin B6 might increase the photosensitivity caused by amiodarone.
Despite initial case reports suggesting that pyridoxine may have a protective effect against amiodarone-induced photosensitivity, preliminary clinical research suggests that pyridoxine may actually exacerbate this adverse effect.

Likelihood Possible Evidence B
Antihypertensive Drugs

Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Research in hypertensive rats shows that vitamin B6 can decrease systolic blood pressure. Similarly, clinical research in patients with hypertension shows that taking high doses of vitamin B6 may reduce systolic and diastolic blood pressure, possibly by reducing plasma levels of epinephrine and norepinephrine.

Likelihood Possible Evidence B
Phenobarbital (Luminal)

High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Preliminary clinical evidence suggests that vitamin B6 200 mg daily can reduce plasma levels of phenobarbital, possibly by increasing metabolism. It is not known whether lower doses have any effect. Advise people taking phenobarbital to avoid high doses of vitamin B6.

Likelihood Possible Evidence D
Phenytoin (Dilantin)

High doses of vitamin B6 may reduce the levels and clinical effects of phenytoin.
Preliminary clinical evidence suggests that vitamin B6 200 mg daily can reduce plasma levels of phenytoin, possibly by increasing metabolism. It is not known whether lower doses have any effect. Advise people taking phenytoin to avoid high doses of vitamin B6.

Likelihood Possible Evidence D
Levodopa

Vitamin B6 may increase the metabolism of levodopa when taken alone, but not when taken in conjunction with carbidopa.
Vitamin B6 (pyridoxine) enhances the metabolism of levodopa, reducing its clinical effects. However, this interaction does not occur when carbidopa is used concurrently with levodopa (Sinemet). Therefore, it is not likely to be a problem in most people.

Likelihood Unlikely Evidence D
Vitamin B6 full monograph & interactions

Sodium7 drug types · 205 drugs

Antihypertensive Drugs

Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
High intake of dietary sodium can increase systolic and diastolic blood pressure. Also, high intake of sodium may necessitate increased use of antihypertensive medications to achieve blood pressure control in some patients, such as those with chronic kidney disease.

Likelihood Probable Evidence A
Corticosteroids

Concomitant use of mineralocorticoids and some glucocorticoids with sodium supplements might increase the risk of hypernatremia.
Mineralocorticoids and some glucocorticoids (corticosteroids) cause sodium retention. This effect is dose-related and depends on mineralocorticoid potency. It is most common with hydrocortisone, cortisone, and fludrocortisone, followed by prednisone and prednisolone.

Likelihood Possible Evidence D
Didanosine (Videx)

Concomitant use of didanosine with additional sodium from dietary or supplemental sources may increase the risk of hypernatremia.
Didanosine formulations contain a significant amount of sodium.

Likelihood Probable Evidence C
Lithium

Altering dietary intake of sodium might alter the levels and clinical effects of lithium.
High sodium intake can reduce plasma concentrations of lithium by increasing lithium excretion. Reducing sodium intake can significantly increase plasma concentrations of lithium and cause lithium toxicity in patients being treated with lithium carbonate. Stabilizing sodium intake is shown to reduce the percentage of patients with lithium level fluctuations above 0.8 mEq/L. Patients taking lithium should avoid significant alterations in their dietary intake of sodium.

Likelihood Probable Evidence B
Sodium Phosphates

Theoretically, concomitant use of sodium phosphate with sodium supplements might increase the risk of hypernatremia.
Use of high doses (> 45 mL in 24 hours) of sodium phosphate, such as those used for bowel cleansing before surgery, can lead to serious electrolyte disturbances, including hypernatremia. The risk of hypernatremia is highest in the elderly and people with other risk factors for electrolyte disturbances.

Likelihood Possible Evidence D
Sodium-Containing Drugs

Concomitant use of sodium-containing drugs with additional sodium from dietary or supplemental sources may increase the risk of hypernatremia and long-term sodium-related complications.
The Chronic Disease Risk Reduction (CDRR) intake level of 2.3 grams of sodium daily indicates the intake at which it is believed that chronic disease risk increases for the apparently healthy population. Some medications contain high quantities of sodium. When used in conjunction with sodium supplements or high-sodium diets, the CDRR may be exceeded. Additionally, concomitant use may increase the risk for hypernatremia; this risk is highest in the elderly and people with other risk factors for electrolyte disturbances.

Likelihood Possible Evidence D
Tolvaptan (Samsca)

Theoretically, concomitant use of tolvaptan with sodium might increase the risk of hypernatremia.
Tolvaptan is a vasopressin receptor 2 antagonist that is used to increase sodium levels in patients with hyponatremia. Patients taking tolvaptan should use caution with the use of sodium salts such as sodium chloride.

Likelihood Probable Evidence C
Sodium 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

Calcium18 drug types · 168 drugs

Ceftriaxone (Rocephin)

Co-administration of intravenous calcium and ceftriaxone can result in precipitation of a ceftriaxone-calcium salt in the lungs and kidneys.
Avoid administering intravenous calcium in any form, such as parenteral nutrition or Lactated Ringers, within 48 hours of intravenous ceftriaxone. Case reports in neonates show that administering intravenous ceftriaxone and calcium can result in precipitation of a ceftriaxone-calcium salt in the lungs and kidneys. In several cases, neonates have died as a result of this interaction. So far there are no reports in adults; however, there is still concern that this interaction might occur in adults.

Likelihood Probable Evidence D
Dolutegravir (Tivicay)

Calcium seems to reduce levels of dolutegravir.
Advise patients to take dolutegravir either 2 hours before or 6 hours after taking calcium supplements. Pharmacokinetic research suggests that taking calcium carbonate 1200 mg concomitantly with dolutegravir 50 mg reduces plasma levels of dolutegravir by almost 40%. Calcium appears to decrease levels of dolutegravir through chelation.

Likelihood Probable Evidence B
Elvitegravir (Vitekta)

Calcium seems to reduce levels of elvitegravir.
Advise patients to take elvitegravir either 2 hours before or 2 hours after taking calcium supplements. Pharmacokinetic research suggests that taking calcium along with elvitegravir can reduce blood levels of elvitegravir through chelation.

Likelihood Probable Evidence B
Aluminum

Calcium citrate might increase aluminum absorption and toxicity. Other types of calcium do not increase aluminum absorption.
Calcium citrate can increase the absorption of aluminum when taken with aluminum hydroxide. The increase in aluminum levels may become toxic, particularly in individuals with kidney disease. However, the effect of calcium citrate on aluminum absorption is due to the citrate anion rather than calcium cation. Calcium acetate does not appear to increase aluminum absorption.

Likelihood Possible Evidence B
Bictegravir/Emtricitabine/Tenofovir Alafenamide (Biktarvy)

Calcium 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 calcium 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, calcium containing products.

Likelihood Probable Evidence D
Bisphosphonates

Calcium reduces the absorption of bisphosphonates.
Advise patients to take bisphosphonates at least 30 minutes before calcium, but preferably at a different time of day. Calcium supplements decrease absorption of bisphosphonates.

Likelihood Probable Evidence C
Calcipotriene (Dovonex)

Taking calcipotriene with calcium might increase the risk for hypercalcemia.
Calcipotriene is a vitamin D analog used topically for psoriasis. It can be absorbed in sufficient amounts to cause systemic effects, including hypercalcemia. Theoretically, combining calcipotriene with calcium supplements might increase the risk of hypercalcemia.

Likelihood Possible Evidence B
Digoxin (Lanoxin)

Using intravenous calcium with digoxin might increase the risk of fatal cardiac arrhythmias.
Hypercalcemia increases the risk of fatal cardiac arrhythmias with digoxin. However, one retrospective analysis of clinical data suggests that intravenous calcium does not increase the risk of dysrhythmias or mortality in patients receiving digoxin.

Likelihood Possible Evidence B
Diltiazem (Cardizem, Others)

Theoretically, calcium may reduce the therapeutic effects of diltiazem.
Hypercalcemia can reduce the effectiveness of verapamil in atrial fibrillation. Theoretically, calcium might increase this risk of hypercalcemia and reduce the effectiveness of diltiazem.

Likelihood Probable Evidence D
Levothyroxine (Synthroid, Others)

Calcium seems to reduce the absorption and effectiveness of levothyroxine.
Advise patients to take levothyroxine and calcium supplements at least 4 hours apart. Calcium reduces levothyroxine absorption, probably by forming insoluble complexes. Calcium carbonate supplements reduce effectiveness of levothyroxine in patients with hypothyroidism.

Likelihood Probable Evidence B
Lithium

Theoretically, concomitant use of calcium and lithium may increase this risk of hypercalcemia.
Clinical research suggests that long-term use of lithium may cause hypercalcemia in 10% to 60% of patients. Theoretically, concomitant use of lithium and calcium supplements may further increase this risk.

Likelihood Possible Evidence B
Quinolone Antibiotics

Calcium seems to reduce the absorption of quinolone antibiotics.
Advise patients to take oral quinolones at least 2 hours before or 4-6 hours after calcium supplements or calcium-fortified foods. Taking calcium at the same time as oral quinolones can reduce quinolone absorption. Calcium binds to quinolones in the gut.

Likelihood Probable Evidence B
Raltegravir (Isentress)

Calcium may reduce levels of raltegravir.
Pharmacokinetic research shows that taking a single dose of calcium carbonate 3000 mg along with raltegravir 400 mg twice daily modestly decreases the mean area under the curve of raltegravir, but the decrease does not necessitate a dose adjustment of raltegravir. However, a case of elevated HIV-1 RNA levels and documented resistance to raltegravir has been reported for a patient taking calcium carbonate 1 gram three times daily plus vitamin D3 (cholecalciferol) 400 IU three times daily in combination with raltegravir 400 mg twice daily for 11 months. It is thought that calcium reduced raltegravir levels by chelation, leading to treatment failure.

Likelihood Possible Evidence B
Sotalol (Betapace)

Calcium seems to reduce the absorption of sotalol.
Advise patients to separate doses by at least 2 hours before or 4-6 hours after calcium. Calcium appears to reduce the absorption of sotalol, probably by forming insoluble complexes.

Likelihood Possible Evidence B
Tetracycline Antibiotics

Calcium seems to reduce the absorption of tetracycline antibiotics.
Advise patients to take oral tetracyclines at least 2 hours before, or 4-6 hours after calcium supplements. Taking calcium at the same time as oral tetracyclines can reduce tetracycline absorption. Calcium binds to tetracyclines in the gut.

Likelihood Probable Evidence C
Thiazide Diuretics

Taking calcium along with thiazides might increase the risk of hypercalcemia and renal failure.
Thiazides reduce calcium excretion by the kidneys. Using thiazides along with moderately large amounts of calcium carbonate increases the risk of milk-alkali syndrome (hypercalcemia, metabolic alkalosis, renal failure). Patients may need to have their serum calcium levels and/or parathyroid function monitored regularly.

Likelihood Probable Evidence C
Verapamil (Calan, Others)

Theoretically, calcium may reduce the therapeutic effects of verapamil.
Hypercalcemia can reduce the effectiveness of verapamil in atrial fibrillation. Theoretically, use of calcium supplements may increase this risk of hypercalcemia and reduce the effectiveness of verapamil.

Likelihood Probable Evidence D
Calcium Channel Blockers

Intravenous calcium may decrease the effects of calcium channel blockers; oral calcium is unlikely to have this effect.
Intravenous calcium is used to decrease the effects of calcium channel blockers in the management of overdose. Intravenous calcium gluconate has been used before intravenous verapamil (Isoptin) to prevent or reduce the hypotensive effects without affecting the antiarrhythmic effects. But there is no evidence that dietary or supplemental calcium when taken orally interacts with calcium channel blockers.

Likelihood Unlikely Evidence D
Calcium 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

Leucine-Enriched Whey Peptides4 drug types · 53 drugs

Levodopa

Theoretically, whey protein might decrease levodopa absorption.
Small clinical studies show that concomitant ingestion of protein or high doses of leucine or isoleucine (100 mg/kg) and levodopa can exacerbate tremor, rigidity, and the "on-off" syndrome in patients with Parkinson disease.

Likelihood Probable Evidence D
Bisphosphonates

Theoretically, whey protein might reduce the absorption of bisphosphonates.
Whey protein contains minerals such as calcium that bind bisphosphonates in the gut. Advise patients to take bisphosphonates at least 30 minutes before whey protein, but preferably at a different time of day.

Likelihood Probable Evidence D
Quinolone Antibiotics

Theoretically, whey protein might decrease quinolone absorption.
Whey protein contains minerals, such as calcium, that can bind to quinolones in the gut. To avoid this interaction, advise patients to take oral quinolones at least 2 hours before or 4-6 hours after whey protein.

Likelihood Probable Evidence D
Tetracycline Antibiotics

Theoretically, whey protein might decrease tetracycline absorption.
Whey protein contains minerals, such as calcium, that bind to tetracyclines in the gut. To avoid this interaction, advise patients to take oral tetracyclines at least 2 hours before or 4-6 hours after whey protein.

Likelihood Probable Evidence D
Leucine-Enriched Whey Peptides full monograph & interactions

L-Glutamine1 drug type · 50 drugs

Anticonvulsants

Theoretically, glutamine might antagonize the effects of anticonvulsant medications.
Glutamine is metabolized to the excitatory neurotransmitter glutamate. Glutamate might have antagonistic effects with anticonvulsant drugs. However, this interaction has not yet been reported in humans.

Likelihood Possible Evidence D
L-Glutamine full monograph & interactions

Vitamin B121 drug type · 20 drugs

Metformin (Glucophage)

Metformin, a common medication used to manage type 2 diabetes, has been associated with lower vitamin B12 levels in some individuals. Prolonged use of metformin can interfere with the absorption of B12 in the digestive system, potentially leading to a deficiency in this essential vitamin.

Likelihood Possible Evidence A
Vitamin B12 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

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
The maker

Brand information

Manufacturer and brand details for Monster Milk Chocolate, from the product label.

CytoSport

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Phone Number
1-888-298-6629
Pharmacist Counseling Corner

Monster Milk Chocolate by CytoSport: Common Questions

Does Monster Milk Chocolate by CytoSport interact with any medications?
Yes. Based on its ingredients, Monster Milk Chocolate has a known interaction with 2,146 medications, including 12 rated major. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Monster Milk Chocolate contains 21 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.
Can I take this while pregnant or breastfeeding?
Most ingredients here show limited pregnancy and breastfeeding data. L-glutamine is rated likely safe in pregnancy and lactation. Vitamin B6, calcium, and niacin are likely safe at recommended amounts in pregnancy; some ingredients have no rating or are rated avoid. Because pregnancy and breastfeeding change your nutritional and medication needs, talk with your obstetrician or midwife before adding this product.
Will this cause side effects?
Most users tolerate it well. The most common side effects are gastrointestinal—bloating, gas, constipation, or diarrhea—especially at higher doses. Beta-alanine commonly causes harmless tingling or flushing of the skin within 20 minutes of taking it, lasting about an hour. If you have a history of kidney or liver disease, or bipolar disorder, talk to your pharmacist before use.
Does the whey protein in this actually help build muscle?
Whey protein is possibly effective for athletic performance and muscle strength when combined with resistance training. The leucine-enriched peptides in this product may provide a small additional benefit, since leucine is an amino acid that supports muscle protein synthesis.
Why does this have so much sodium and potassium?
Both are electrolytes that your body needs to maintain fluid balance, nerve function, and muscle contraction—especially during and after exercise. However, if you take blood pressure medications, heart medications, or diuretics, the sodium and potassium levels in this product matter; check with your pharmacist.
Is creatine safe to use regularly?
Creatine monohydrate is possibly effective for muscle strength and athletic performance and is generally well tolerated in healthy adults. Common side effects are water retention, muscle cramps, and mild gastrointestinal upset. If you have kidney disease, avoid it without medical supervision. It has not been studied in pregnancy or breastfeeding, so avoid it during those times.
What is beta-alanine (CarnoSyn) and what does it do?
Beta-alanine is an amino acid that is possibly effective for athletic and physical performance. It commonly causes a harmless tingling sensation (paresthesia) and skin flushing that usually appear within 20 minutes and last about an hour. This effect is dose-dependent and decreases with repeated use.

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

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Go deeper

The Full Monographs Behind Monster Milk Chocolate’s Ingredients

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

Herb & supplement monograph

Glutamine

Interacts with 50 drugs

Glutamine is the most abundant amino acid in the body and is usually made in your muscles. A prescription form is FDA-approved to help reduce sickle cell disease complications, but for most...

Read the full Glutamine monograph → Herb & supplement monograph

Black Psyllium

Interacts with 2,025 drugs

Black psyllium is a soluble-fiber supplement made from the seeds of a Plantago plant, used mostly to ease constipation and support digestive health. It is best known and most studied for rel...

Read the full Black Psyllium monograph → Herb & supplement monograph

Vitamin B6

Interacts with 210 drugs

Vitamin B6 (pyridoxine) is an essential water-soluble vitamin that your body needs for metabolism, brain function, and making red blood cells. It is best known for helping with pregnancy-rel...

Read the full Vitamin B6 monograph → Herb & supplement monograph

Sodium

Interacts with 205 drugs

Sodium is an essential mineral and electrolyte your body needs to balance fluids, support nerves, and help muscles work. Most people in modern diets get more than enough—often too much—from...

Read the full Sodium monograph → Herb & supplement monograph

Vitamin B12

Interacts with 20 drugs

Vitamin B12 (cobalamin) is an essential nutrient your body needs to make red blood cells, keep nerves healthy, and support DNA. Supplements are very helpful for people who are deficient — su...

Read the full Vitamin B12 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

Calcium

Interacts with 168 drugs

Calcium is an essential mineral your body needs for strong bones, nerve signaling, and muscle function, and supplements can help fill gaps when diet falls short. Most people do best getting...

Read the full Calcium 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

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

Niacin

Interacts with 727 drugs

Niacin (vitamin B3) is an essential nutrient your body needs for energy and metabolism, and deficiency is uncommon in most developed countries. Prescription-strength niacin has been used to...

Read the full Niacin monograph → Herb & supplement monograph

Beta-alanine

Beta-alanine is an amino acid taken mostly by athletes to raise muscle carnosine, which may help buffer acid and reduce fatigue during short, high-intensity exercise. The evidence is moderat...

Read the full Beta-alanine monograph → Herb & supplement monograph

Betaine Anhydrous

Betaine anhydrous (also called trimethylglycine) is a compound found in foods like beets, spinach, and whole grains, and is sold as a supplement and as a prescription medicine for a rare gen...

Read the full Betaine Anhydrous 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

Creatine

Creatine is one of the most studied sports supplements, with solid evidence that it can boost strength and performance during short, high-intensity activities like weightlifting and sprintin...

Read the full Creatine monograph → Herb & supplement monograph

Whey Protein

Interacts with 53 drugs

Whey protein is a high-quality, complete protein made from cow's milk that can help people meet protein needs and support muscle growth when combined with exercise. It is generally safe for...

Read the full Whey Protein monograph → Herb & supplement monograph

Proteolytic Enzymes (proteases)

Proteolytic enzymes are proteins that help break down other proteins, and common examples include bromelain (from pineapple), papain (from papaya), trypsin, chymotrypsin, and pancreatin. Peo...

Read the full Proteolytic Enzymes (proteases) monograph →
Sources

Sources & How We Checked

Monster Milk Chocolate'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.

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 472 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.

Glutamine 11 references
  1. Miller AL. Therapeutic considerations of L-glutamine: a review of the literature. Altern Med Rev 1999;4:239-48..
  2. Bozzetti F, Biganzoli L, Gavazzi C, et al. Glutamine supplementation in cancer patients receiving chemotherapy: a double-blind randomized study. Nutrition 1997;13:748-51.. PubMed
  3. Mebane AH. L-Glutamine and mania. Am J Psychiatry 984;141:1302-3.
  4. Meldrum BS. Glutamate as a neurotransmitter in the brain: review of physiology and pathology. J Nutr 2000;130:1007S-15S.. PubMed
  5. Garlick PJ. Assessment of the safety of glutamine and other amino acids. J Nutr 2001;131:2556S-61S.. PubMed
  6. Chapman AG. Glutamate and epilepsy. J Nutr 2000;130:1043S-5S.. PubMed
  7. Ziegler TR. Glutamine supplementation in cancer patients receiving bone marrow transplantation and high dose chemotherapy. J Nutr 2001;131:2578S-84S.. PubMed
  8. Laviano A, Molfino A, Lacaria MT, Canelli A, De Leo S, Preziosa I, Rossi Fanelli F. Glutamine supplementation favors weight loss in nondieting obese female patients. A pilot study. Eur J Clin Nutr. 2014 Nov;68(11):1264-6. PubMed
  9. Endari (l-glutamine) [package insert]. Torrance, CA: Emmaus Medical,Inc; 2017.
  10. Niihara Y, Miller ST, Kanter J, et al. A Phase 3 Trial of l-Glutamine in Sickle Cell Disease. N Engl J Med 2018;379(3):226-35. doi: 10.1056/NEJMoa1715971.
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Black Psyllium 18 references
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Vitamin B6 32 references
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Vitamin B12 30 references
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Riboflavin 5 references
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Thiamine 7 references
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Niacin 66 references
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Beta-alanine 13 references
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Betaine Anhydrous 11 references
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Whey Protein 25 references
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See these in context on the Whey Protein monograph →

Proteolytic Enzymes (proteases) 3 references
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See these in context on the Proteolytic Enzymes (proteases) monograph →

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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.

© 2021 Therapeutic Research Center, LLC

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