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Dietary supplement

Vitamin E 400 IU Ingredients & Drug Interactions

by Sundown Naturals

Vitamin E 400 IU label
See full label image
Softgel Capsule Category: Vitamin
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Vitamin E 400 IU 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: Moderate

Vitamin E 400 IU is a dietary supplement by Sundown Naturals with 4 active ingredients. Its ingredients are commonly taken for morning sickness in pregnancy, premenstrual syndrome (pms), preventing or treating b6 deficiency.Based on those ingredients, 960 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Vitamin E, Vitamin B6, Folic Acid. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Vitamin E 400 IU by Sundown Naturals

Ask about any prescription or over-the-counter medication and we check it for interactions with Vitamin E 400 IU by Sundown Naturals — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Vitamin E 400 IU by Sundown Naturals

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 4 of its 4 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

Sundown Naturals Vitamin E 400 IU contains four active ingredients: vitamin E (the main component at 400 IU per softgel), along with vitamin B6, folic acid, and vitamin B12. These are combined with inactive ingredients including gelatin, vegetable glycerin, soybean oil, and yellow beeswax to create the softgel capsule.

Vitamin B6 supports nerve function and helps your body use proteins; folic acid is a B vitamin that aids cell division and DNA synthesis; vitamin B12 is essential for nerve health and red blood cell formation; and vitamin E is a fat-soluble antioxidant that protects your cells.

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
Strong

Clinical evidence supports at least one of this product's ingredients for its stated purpose.

Why this rating?
  • The label markets this product for: antioxidant support for heart health.
  • We looked for evidence on: Cardiovascular disease (CVD), Atherosclerosis, Angina, Congestive heart failure (CHF), Coronary artery bypass graft (CABG) surgery, Angioplasty — and 4 related terms.
  • The strongest evidence on file: Vitamin B6 is rated "Effective" for Sideroblastic anemia (Natural Medicines).
  • Also on file: Vitamin E is rated "Possibly Ineffective" for Angina, Atherosclerosis, Congestive heart failure (CHF).
  • Also on file: Folic Acid is rated "Possibly Ineffective" for Anemia.

Vitamin E at this dose is effective for vitamin E deficiency and a rare genetic condition called AVED (ataxia with vitamin E deficiency). It's considered possibly effective for Alzheimer's disease, beta-thalassemia, G6PD deficiency, and intracranial hemorrhage, though the evidence isn't conclusive.

Vitamin B6 in this product is effective for sideroblastic anemia, B6 deficiency, and pyridoxine-dependent epilepsy; it's likely effective for high homocysteine levels (hyperhomocysteinemia) and possibly effective for pregnancy-related nausea and vomiting. Folic acid is effective for folate deficiency, likely effective for preventing methotrexate toxicity and neural tube birth defects, and possibly effective for depression, gum overgrowth caused by phenytoin, and cognitive impairment.

Vitamin B12 is effective for two rare absorption disorders and B12 deficiency, likely effective for cyanide poisoning, and possibly effective for canker sores and nerve pain after shingles.

The evidence, ingredient by ingredient Vitamin B6 Folic Acid Vitamin B12 Vitamin E

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 4 of the 4 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 4 of 4.
  • General safety write-ups exist for 4 of 4.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

These ingredients are generally well tolerated at the doses found in this product. Vitamin B6 is safe at normal amounts but can harm nerves (sensory neuropathy) with high doses over time; vitamin E carries a caution about higher doses increasing bleeding risk.

Folic acid is considered safe at recommended levels, though very high long-term use has raised questions about cancer risk in some population studies. Vitamin B12 is very safe with no established upper limit because your body removes excess in urine.

For pregnancy, the data we hold indicates that folic acid is likely safe and vitamin B12 is safe at normal recommended amounts, but we have no pregnancy safety data on file for vitamin B6 or vitamin E in this product—talk with your doctor or pharmacist about those before use. For breastfeeding, folic acid and B12 are considered safe at recommended doses; vitamin B6 and vitamin E safety during breastfeeding should be discussed with your healthcare provider.

Side effects, ingredient by ingredient Vitamin B6 Folic Acid Vitamin B12 Vitamin E

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 4 of the 4 matched ingredients can interact with medications — Vitamin B12, Vitamin B6, Vitamin E, Folic Acid.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; immunosuppressants / transplant drugs; cancer treatments; Parkinson's medications.
  • For scale: 961 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 with your pharmacist if you take blood thinners or antiplatelet drugs (vitamin E increases bleeding risk), seizure medications like phenobarbital or phenytoin (B6 and folic acid may reduce their effect or worsen control), heart rhythm drugs like amiodarone (B6 may worsen sun sensitivity), blood pressure medications (B6 may add to their effect), metformin for diabetes (B12 can be depleted), or cancer drugs including methotrexate, capecitabine, 5-fluorouracil, or alkylating agents (folic acid and vitamin E may interfere). No interactions are documented for the ingredients we could not fully verify.

Check your own medication Run your meds through the checker above

The bottom line

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

This four-ingredient B-complex and vitamin E blend may help if you have a documented deficiency in any of these nutrients or conditions like pregnancy-related nausea (B6) or neural tube defect prevention (folic acid). If you take blood thinners, seizure medications, metformin, or cancer drugs, check your exact medications with our tool before starting.

Talk to your pharmacist, especially if you're pregnant, breastfeeding, or taking multiple prescriptions.

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

Assessment coverage: 4 of 4 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Feb 26, 2014.

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 Vitamin E 400 IU, straight from the product label.

Brand Sundown Naturals
Barcode (UPC) 030768006709
Net contents 60 Softgel(s)
Market status On market
Date entered into DSLD Feb 26, 2014
DSLD ID 30445
Product type Vitamin
Supplement form Softgel Capsule
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten Free, 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 Vitamin E 400 IU by Sundown Naturals, 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 Softgel(s)
Maximum serving Sizes:
1 Softgel(s)
UPC/BARCODE
030768006709
IngredientAmount% DV
Vitamin B61.7 mg85%
Folic Acid400 mcg100%
Vitamin B125.2 mcg87%
Vitamin E400 IU1333%

Other ingredients: Gelatin, Vegetable Glycerin, Soybean Oil, yellow Beeswax, Contains <2% of

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.
Suggested/Recommended/Usage/Directions

DIRECTIONS: FOR ADULTS, TAKE ONE (1) SOFTGEL UP TO TWO TIMES DAILY, PREFERABLY WITH MEALS.

General Statements

As a reminder, discuss the supplements and medications you take with your health care providers.

Smart Facts Sundown Naturals’ E 400 IU with Folic Acid, B-6 and B-12 is a select combination. Vitamin E provides powerful antioxidant support for cells, while Folic Acid, Vitamin B-6 and Vitamin B-12 work together to promote heart health and help to maintain homocysteine levels already within the normal range.*

Heart Healthy*

FDA Disclaimer Statement

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

Formulation

No Artificial Flavor or Sweetener, No Preservatives, No Sugar, No Starch, No Milk, No Lactose, No Gluten, No Wheat, No Yeast, No Fish. Sodium Free.

Storage

STORE AT ROOM TEMPERATURE AND AVOID EXCESSIVE HEAT.

General

Prod. No. 45203 09E B34216 CAB

Brand IP Statement(s)

(C)2012

Precautions

WARNING: If you are pregnant, nursing, taking any medications or planning any medical procedure, consult your doctor before use.

KEEP OUT OF REACH OF CHILDREN.

TAMPER RESISTANT: DO NOT USE IF SEAL UNDER CAP IS BROKEN OR MISSING.

Discontinue use and consult your doctor if any adverse reactions occur.

Seals/Symbols

{Bottle} PLEASE RECYCLE

GUARANTEED LABORATORY TESTED QUALITY

FDA Statement of Identity

VITAMIN SUPPLEMENT

Formula

Vitamin E 400 IU with FOLIC ACID, B-6 & B-12

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

See for yourself

Vitamin E 400 IU by Sundown Naturals label

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

Vitamin E 400 IU 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 Vitamin E 400 IU by Sundown Naturals

These are the 4 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 Softgel(s) Dosage formSoftgel Capsule 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.

Vitamin B6

Interacts with
210 drugs
1.7 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

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

Vitamin B12

Interacts with
20 drugs
5.2 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

Vitamin E

Interacts with
764 drugs
400 IU per serving Form: DL-Alpha-Tocopheryl Acetate

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

Other (inactive) ingredients: Gelatin, Vegetable Glycerin, Soybean Oil, Yellow Beeswax, Contains <2% of. These complete the product’s ingredient list but are not active constituents.

Interaction report

Vitamin E 400 IU by Sundown Naturals Drug Interactions

Want to check YOUR meds against Vitamin E 400 IU?

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
960Drugs
936 Moderate 24 Minor

Ingredients driving the most interactions

Vitamin E 764
Vitamin B6 210
Folic Acid 40
Vitamin B12 20

Individual Drug Interactions

The ingredients in Vitamin E 400 IU interact with 960 drugs. Click any drug to see the details.

4 of the 4 ingredients in Vitamin E 400 IU interact with drugs. Each result below shows which ingredient is responsible. Vitamin E Vitamin B6 Folic Acid Vitamin B12

Each ingredient & the kinds of drugs it affects

For each ingredient in Vitamin E 400 IU 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

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

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

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
The maker

Brand information

Manufacturer and brand details for Vitamin E 400 IU, from the product label.

Sundown Naturals

See all Sundown Naturals products
Web Address
www.sundownnaturals.com
Pharmacist Counseling Corner

Vitamin E 400 IU by Sundown Naturals: Common Questions

Does Vitamin E 400 IU by Sundown Naturals interact with any medications?
Yes. Based on its ingredients, Vitamin E 400 IU has a known interaction with 960 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Vitamin E 400 IU contains 4 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 if I'm pregnant?
Folic acid and vitamin B12 in this product are considered safe at normal recommended amounts during pregnancy and are actually important for preventing birth defects and supporting fetal development. However, we don't have enough pregnancy safety data on file for vitamin B6 and vitamin E in this formulation, so talk with your doctor or midwife before starting to make sure it's right for you.
Does this contain any fillers?
Yes, this softgel contains inactive ingredients including gelatin, vegetable glycerin, soybean oil, and yellow beeswax to form and preserve the capsule.
Can vitamin E really cause bleeding?
At the dose in this product—400 IU—vitamin E can interfere with blood clotting if you're also taking blood thinners like warfarin. The bleeding risk is dose-dependent, meaning it increases with higher doses. If you take any blood thinner or antiplatelet drug, check with your pharmacist first.
Is this product safe for people with seizure disorders?
Not without talking to your doctor first. Both vitamin B6 and folic acid can potentially affect how seizure medications like phenobarbital, phenytoin, and primidone work, either reducing their effectiveness or worsening seizure control. If you take a seizure medication, verify it with your prescriber or pharmacist.
Does vitamin B6 in here help with morning sickness?
Vitamin B6 is possibly effective for pregnancy-related nausea and vomiting, and it's often used at recommended levels for that purpose—but only under a doctor's guidance. Don't self-treat with high doses; talk with your obstetrician first.
Can I take this if I'm on metformin for diabetes?
Vitamin B12 in this product can be depleted over long-term metformin use, so taking it may help. However, your doctor should monitor your B12 levels. Check with your pharmacist before starting to make sure this product works with your full medication list.

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.

Vitamin E 400 IU label
Go deeper

The Full Monographs Behind Vitamin E 400 IU’s Ingredients

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

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

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

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

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 →
Sources

Sources & How We Checked

Vitamin E 400 IU'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 182 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.

Vitamin B6 32 references
  1. Hansten PD, Horn JR. Drug Interactions Analysis and Management. Vancouver, WA: Applied Therapeutics Inc., 1997 and updates.
  2. Yates AA, Schlicker SA, Suitor CW. Dietary reference intakes: The new basis for recommendations for calcium and related nutrients, B vitamins, and choline. J Am Diet Assoc 1998;98:699-706. PubMed
  3. Geerling BJ, Dagnelie PC, Badart-Smook A, et al. Diet as a risk factor for the development of ulcerative colitis. Am J Gastroenterol 2000;95:1008-13. PubMed
  4. South M. Neonatal seizures after pyridoxine use -- reply. Lancet 1999;354:2083. PubMed
  5. 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
  6. Baxter P, Aicardi J. Neonatal seizures after pyridoxine use. Lancet 1999;354:2082-3. PubMed
  7. Bendich A, Cohen M. Vitamin B6 safety issues. Ann N Y Acad Sci 1990;585:321-30.
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