High Potency 1000 IU Vitamin E Ingredients & Drug Interactions
by Equaline
What is this page for?
First and foremost: checking High Potency 1000 IU Vitamin E 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
High Potency 1000 IU Vitamin E is a dietary supplement by Equaline with 1 active ingredient. Its ingredients are commonly taken for general antioxidant support, skin and hair care, heart health.Based on those ingredients, 764 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Vitamin E. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against High Potency 1000 IU Vitamin E by Equaline
Ask about any prescription or over-the-counter medication and we check it for interactions with High Potency 1000 IU Vitamin E by Equaline — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
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HelloPharmacist Scorecard of High Potency 1000 IU Vitamin E by Equaline
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.
What’s inside
Full disclosure
This product contains one active ingredient: 1000 IU of vitamin E (specifically DL-alpha-tocopheryl acetate, a synthetic form). The softgel capsule also holds several inactive ingredients — gelatin, glycerin, and soybean oil — that help deliver the vitamin.
Does it work?
Moderate evidence
Vitamin E is Effective for treating vitamin E deficiency and AVED (ataxia with vitamin E deficiency), a rare inherited disorder. It's Possibly Effective for Alzheimer disease, beta-thalassemia, G6PD deficiency, and intracranial hemorrhage, though the evidence in those cases is less established.
How safe is it?
Well-documented data
Vitamin E from food and normal doses is generally well tolerated. High-dose long-term supplements like this one, though, may raise your bleeding risk and carry other potential harms.
Serious side effects are rare but include bleeding and hemorrhagic stroke — especially a concern if you're a male smoker or have a vitamin K deficiency. Talk with your doctor before taking high-dose vitamin E supplements if you're pregnant; amounts from food and prenatal vitamins are appropriate, but supplements above that need medical guidance.
While breastfeeding, normal dietary amounts are fine, but check with your doctor about high-dose supplements.
Meds to double-check
Moderate interaction found
Before taking this product, double-check with your doctor or pharmacist if you're on blood thinners or antiplatelet drugs (especially warfarin), chemotherapy, cyclosporine, selumetinib, or niacin. These are Moderate severity interactions that could reduce drug effectiveness or raise your bleeding risk.
All of these deserve a quick conversation before you start.
The bottom line
Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.
This 1000 IU vitamin E supplement works well if you have an actual vitamin E deficiency or AVED. If you take blood thinners, are on chemotherapy, use cyclosporine, or take niacin, you need to discuss this with your doctor or pharmacist before starting — the interactions matter at this dose.
For everyone else, talk it over with your own healthcare provider to make sure it fits your situation.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Apr 26, 2012.
This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed
General information
Key facts about High Potency 1000 IU Vitamin E, straight from the product 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 High Potency 1000 IU Vitamin E by Equaline, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Vitamin E | 1000 IU | 3333% |
Other ingredients: DL-Alpha-Tocopheryl Acetate, Gelatin, Glycerin, Soybeal Oil
Tap any ingredient to jump to its full detail below.
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.
Seals/Symbols
QUALITY Promise We are committed to your satisfaction and guarantee the quality of this product.
DIETARY SUPPLEMENT USP VERIFIED(TM)
General Statements
heart health
contributes to a healthy heart
USP has tested and verified ingredients, potency, and manufacturing process. USP sets official standards for dietary supplements. See www.uspverified.org
A powerful antioxidant that contributes to cardiovascular, mental and prostate health, and may enhance the immune function. Vitamin E has many potential long term benefits for healthy people that include immune function, skin, hair, eye, mental, prostate and joint health.* Vitamin E is a key component in the structure of our body's cells.*
Vitamin E Capsules USP.
FRESHNESS AND POTENCY GUARANTEED THROUGH:
FDA Statement of Identity
dietary supplement
Suggested/Recommended/Usage/Directions
Suggested use: Take one softgel daily with a full glass of water, preferably after a meal.
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.
Precautions
Keep out of the reach of children.
Storage
Keep in a cool dry place, tightly closed.
General
EAL5585A06
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
High Potency 1000 IU Vitamin E by Equaline label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.
View the full label (PDF)The Ingredients in High Potency 1000 IU Vitamin E by Equaline
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size1 Softgel(s) Dosage formSoftgel Capsule Amounts shown are per serving.
Vitamin E
Interacts with764 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 correc...
Vitamin E monograph & interactionsOther (inactive) ingredients: DL-Alpha-Tocopheryl Acetate, Gelatin, Glycerin, Soybeal Oil. These complete the product’s ingredient list but are not active constituents.
High Potency 1000 IU Vitamin E by Equaline Drug Interactions
HelloPharmacist Interaction Report
Equaline High Potency 1000 IU Vitamin E interacts with multiple medication types, with the most serious concern being its potential to increase bleeding risk when combined with blood thinners (anticoagulants) and antiplatelet drugs — a Moderate severity interaction.
At the 1000 IU dose in this product, vitamin E can interfere with vitamin K-dependent clotting factors and reduce platelet stickiness, raising bleeding risk, especially if you're already on warfarin (Coumadin) or similar medications.
Read the full breakdown — every affected drug type, severity by severity
Vitamin E may also reduce how your liver processes certain medications (CYP3A4 substrates), potentially lowering their blood levels and effectiveness — a Moderate concern. It theoretically could blunt the effectiveness of some chemotherapy drugs (alkylating agents and antitumor antibiotics that rely on generating free radicals to work), and might increase cyclosporine absorption if you're taking that immunosuppressant.
There's also a Minor interaction with niacin, where vitamin E might weaken niacin's benefits for cholesterol.
Altogether, these interactions span 765 individual medications. If you take any prescription medication — especially blood thinners, chemotherapy, cyclosporine, or niacin — check your exact drugs with the tool on this page before starting.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against High Potency 1000 IU Vitamin E?
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 checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in High Potency 1000 IU Vitamin E interact with 764 drugs. Click any drug to see the details.
1 of the 1 ingredient in High Potency 1000 IU Vitamin E interact with drugs. Each result below shows which ingredient is responsible. Vitamin E
Acetaminophen, Chlorpheniramine, PseudoephedrineAlka-Seltzer PLUS Liquid Gels, Children's Tylenol Cold, Codimal, Comtrex, Extra Strength Tylenol Allergy Sinus, Lorsin +3 more
How Acetaminophen, Chlorpheniramine, Pseudoephedrine interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Acetaminophen, Chlorpheniramine, Pseudoephedrine interactionAcetaminophen, DextromethorphanTylenol Cough Ex Strength
How Acetaminophen, Dextromethorphan interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Acetaminophen, Dextromethorphan interactionAcetaminophen, Dextromethorphan, Doxylamine, PseudoephedrineVicks NyQuil
How Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PhenylephrineConar-A
How Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PhenylpropanolamineAnatuss
How Acetaminophen, Dextromethorphan, Guaifenesin, Phenylpropanolamine interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylpropanolamine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PseudoephedrineRobitussin Cold, Severe Cold, Suphedrine Cold/Cough
How Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interactionAcetaminophen, Dextromethorphan, Phenylpropanolamine, PyrilamineTheracaps
How Acetaminophen, Dextromethorphan, Phenylpropanolamine, Pyrilamine interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Acetaminophen, Dextromethorphan, Phenylpropanolamine, Pyrilamine interactionAcetaminophen, Dextromethorphan, PseudoephedrineAlka-Seltzer PLUS Flu Liquid Gels, Non Aspirin Cold Caps, Tylenol Cold, Tylenol Flu Daytime Ex Strength, Tylenol Flu Ex Strength
How Acetaminophen, Dextromethorphan, Pseudoephedrine interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Acetaminophen, Dextromethorphan, Pseudoephedrine interactionAcetaminophen, HydrocodoneAnexsia, Anodynos DHC, Azdone, Co-Gesic, Doucet, Lorcet +9 more
How Acetaminophen, Hydrocodone interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Acetaminophen, Hydrocodone interactionAcetaminophen, IbuprofenCombogesic
How Acetaminophen, Ibuprofen interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin EAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Concomitant use of vitamin E and anticoagulant or antiplatelet agents might increase the risk of bleeding.
Read the full Vitamin E + Acetaminophen, Ibuprofen interactionAcetaminophen, Phenylephrine, ChlorpheniramineSuper Cold Tabs
How Acetaminophen, Phenylephrine, Chlorpheniramine interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Acetaminophen, Phenylephrine, Chlorpheniramine interactionAcetylsalicylic AcidEntrophen
How Acetylsalicylic Acid interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin EAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Concomitant use of vitamin E and anticoagulant or antiplatelet agents might increase the risk of bleeding.
Read the full Vitamin E + Acetylsalicylic Acid interactionAdagrasibKrazati
How Adagrasib interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Adagrasib interactionAlfentanilAlfenta
How Alfentanil interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Alfentanil interactionAlfuzosinUroxatral
How Alfuzosin interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Alfuzosin interactionAliskirenTekturna
How Aliskiren interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Aliskiren interactionAlmotriptanAlmogran, Axert
How Almotriptan interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Almotriptan interactionAlogliptinNesina
How Alogliptin interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Alogliptin interactionAlogliptin, PioglitazoneOseni
How Alogliptin, Pioglitazone interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Alogliptin, Pioglitazone interactionAlpelisibPiqray
How Alpelisib interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Alpelisib interactionAlprazolamNiravam, Xanax
How Alprazolam interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Alprazolam interactionAlteplase, TpaActilyse, Activase
How Alteplase, Tpa interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin EAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Concomitant use of vitamin E and anticoagulant or antiplatelet agents might increase the risk of bleeding.
Read the full Vitamin E + Alteplase, Tpa interactionAltretamineHexalen
How Altretamine interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin EAlkylating Agents Moderate
Interaction Summary
Theoretically, antioxidant effects of vitamin E might reduce the effectiveness of alkylating agents.
Read the full Vitamin E + Altretamine interactionAluminum Hydroxide, Aspirin, Codeine Phosphate, Magnesium HydroxideAscriptin Codeine #2
How Aluminum Hydroxide, Aspirin, Codeine Phosphate, Magnesium Hydroxide interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin EAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Concomitant use of vitamin E and anticoagulant or antiplatelet agents might increase the risk of bleeding.
Read the full Vitamin E + Aluminum Hydroxide, Aspirin, Codeine Phosphate, Magnesium Hydroxide interactionAluminum Hydroxide, Aspirin, Magnesium HydroxideAscriptin
How Aluminum Hydroxide, Aspirin, Magnesium Hydroxide interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin EAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Concomitant use of vitamin E and anticoagulant or antiplatelet agents might increase the risk of bleeding.
Read the full Vitamin E + Aluminum Hydroxide, Aspirin, Magnesium Hydroxide interactionAmbrisentanLetairis, Volibris
How Ambrisentan interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Ambrisentan interactionAmiodaroneCordarone, Pacerone
How Amiodarone interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Amiodarone interactionAmitriptylineElavil
How Amitriptyline interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Amitriptyline interactionAmitriptyline, ChlordiazepoxideLimbitrol DS
How Amitriptyline, Chlordiazepoxide interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Amitriptyline, Chlordiazepoxide interactionAmitriptyline, PerphenazineEtrafon, Etrafon-A, Etrafon-Forte, Triavil
How Amitriptyline, Perphenazine interacts with High Potency 1000 IU Vitamin E — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Amitriptyline, Perphenazine interactionEach ingredient & the kinds of drugs it affects
For each ingredient in High Potency 1000 IU Vitamin E with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.
Vitamin E
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.
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.
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.
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.
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.
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.
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.
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.
Brand information
Manufacturer and brand details for High Potency 1000 IU Vitamin E, from the product label.
High Potency 1000 IU Vitamin E by Equaline: Common Questions
Does High Potency 1000 IU Vitamin E by Equaline interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Is 1000 IU a lot of vitamin E?
Can I take this if I'm on warfarin?
Will vitamin E help my memory or Alzheimer disease?
Is it safe during pregnancy?
What form of vitamin E is this?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if High Potency 1000 IU Vitamin E is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
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.
The Full Monographs Behind High Potency 1000 IU Vitamin E’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
High Potency 1000 IU Vitamin E's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.
The 64 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 E 64 references
- Kim JM, White RH. Effect of vitamin E on the anticoagulant response to warfarin. Am J Cardiol 1996;77:545-6. PubMed
- Corrigan JJ Jr. The effect of vitamin E on warfarin-induced vitamin K deficiency. Ann N Y Acad Sci 1982;393:361-8. PubMed
- Corrigan JJ Jr. Coagulation problems relating to vitamin E. Am J Pediatr Hematol Oncol 1979;1:169-73.
- Corrigan JJ Jr, Marcus FI. Coagulopathy associated with vitamin E ingestion. JAMA 1974;230:1300-1. DOI
- Labriola D, Livingston R. Possible interactions between dietary antioxidants and chemotherapy. Oncology 1999;13:1003-8.
- Chang T, Benet LZ, Hebert MF. The effect of water-soluble vitamin E on cyclosporine pharmacokinetics in healthy volunteers. Clin Pharmacol Ther 1996;59:297-303. PubMed
- Pan SH, Lopez RR Jr, Sher LS, et al. Enhanced oral cyclosporine absorption with water-soluble vitamin E early after liver transplantation. Pharmacother 1996;16:59-65. DOI
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