Interactions on record — worth a quick check against your medications. Check your meds →
Dietary supplement

Liquid Vitamin E Ingredients & Drug Interactions

by Nature's Answer

Liquid Category: Other Combinations
Most serious interaction: Moderate
The interaction bottom line Most serious interaction: Moderate

Liquid Vitamin E is a dietary supplement by Nature's Answer with 4 active ingredients. Its ingredients are commonly taken for heart health, high blood pressure, high cholesterol.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, Avocado Oil. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

HelloPharmacist Scorecard of Liquid Vitamin E by Nature's Answer

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

What’s inside

Low disclosure
Ingredient Transparency · database check
Low

Most active ingredients don't disclose an individual amount — you can't tell how much of each you're getting.

Why this rating?
  • The label discloses an exact amount for 2 of its 5 active ingredients.
  • “Proprietary Oil Blend” is a proprietary blend — the label gives one combined amount (1,800 mg) without saying how much of each component you get.

This liquid contains 5 active ingredients: vitamin E, avocado oil, macadamia nut oil, extra virgin olive oil, and a proprietary oil blend. They're suspended in a carrier of monounsaturated fat and an inactive ingredient called Quik-Sorb.

Vitamin E is the main active component — a fat-soluble antioxidant your body needs. The oils (avocado, macadamia nut, and olive) are sources of healthy fats and additional micronutrients.

Does it work?

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

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

Strong

Strong clinical evidence supports its ingredients for:

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.
  • Since the label doesn't commit to one use, we graded the ingredients' overall clinical evidence instead.
  • On file: Ataxia with vitamin E deficiency (AVED) — rated "Effective" (Vitamin E) (Natural Medicines).
  • On file: Vitamin E deficiency — rated "Effective" (Vitamin E) (Natural Medicines).
  • On file: Tardive dyskinesia — rated "Possibly Effective" (Vitamin E) (Natural Medicines).
  • On file: Hypercholesterolemia — rated "Possibly Effective" (Macadamia Nut) (Natural Medicines).
  • On file: Nonalcoholic steatohepatitis (NASH) — rated "Possibly Effective" (Vitamin E) (Natural Medicines).

Vitamin E is effective for vitamin E deficiency and a genetic condition called ataxia with vitamin E deficiency (AVED). It's possibly effective for Alzheimer disease, beta-thalassemia, G6PD deficiency, and intracranial hemorrhage.

The evidence isn't established for avocado oil on the conditions in our data — it's possibly effective for high cholesterol, but insufficient evidence exists for metabolic syndrome, aging skin, and obesity. Olive oil and macadamia nut oil have insufficient evidence to rate for the conditions we hold data on.

The evidence, ingredient by ingredient Olive Avocado Macadamia Nut 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.

Vitamin E from food and typical doses is generally well tolerated, but high-dose long-term supplements may raise the risk of bleeding and other harms — there's a rare concern of hemorrhagic stroke with high-dose synthetic vitamin E in certain populations. Avocado oil as a food is safe for most people, though concentrated supplements haven't been well studied in pregnancy or while breastfeeding.

Avocado can rarely trigger a severe gastrointestinal reaction called FPIES (food protein-induced enterocolitis syndrome, mostly in infants and children), cause allergic reactions in people with latex sensitivity, and topical avocado cream with vitamin B12 may cause itching. Macadamia nut oil is well tolerated; allergic reactions including anaphylaxis are rare but possible.

Olive oil in food amounts is safe; concentrated olive leaf supplements are less studied. The most common side effects from olive are headache and stomach discomfort.

Side effects, ingredient by ingredient Olive Avocado Macadamia Nut 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?
  • 2 of the 4 matched ingredients can interact with medications — Avocado, Vitamin E.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; immunosuppressants / transplant drugs; cancer treatments.
  • For scale: 765 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 doctor or pharmacist if you take blood thinners or antiplatelet drugs (Moderate risk of bleeding), medications metabolized by CYP3A4 enzymes in your liver (Moderate risk of reduced effectiveness), chemotherapy drugs like alkylating agents or antitumor antibiotics (Moderate risk of reduced drug effectiveness), cyclosporine (Moderate risk of increased cyclosporine levels), selumetinib (Moderate risk of bleeding from combined vitamin E dose), or niacin (Minor risk of reduced HDL benefit). No interactions are documented for the monounsaturated fat we could not check.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFormula with limited ingredient disclosure with strong clinical evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.

This product is useful if you have a vitamin E deficiency or need added vitamin E for specific medical reasons. If you take blood thinners like warfarin, any antiplatelet drugs, chemotherapy, cyclosporine, niacin, or medications processed through your liver, talk with your doctor or pharmacist before starting — the interactions could affect how your drugs work or increase bleeding risk.

Stop and check with your healthcare provider if you experience unusual bruising or bleeding.

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

Assessment coverage: 4 of 5 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated May 19, 2022.

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 Liquid Vitamin E, straight from the product label.

Brand Nature's Answer
Barcode (UPC) 083000261350
Net contents 8 fl. Oz.; 240 mL
Market status On market
Date entered into DSLD May 19, 2022
DSLD ID 264080
Product type Other Combinations
Supplement form Liquid
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 Liquid Vitamin E by Nature's Answer, 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:
2.5 mL
Maximum serving Sizes:
2.5 mL
Servings per container
96
UPC/BARCODE
083000261350
IngredientAmount% DV
Calories20 Calorie(s)--
Calories from Fat20 Calorie(s)--
Monounsaturated Fat0.5 Gram(s)--
Total Fat2 Gram(s)3%
extra virgin Olive Oil0 NP--
Avocado Oil0 NP--
Proprietary Oil Blend1800 mg--
Macadamia Nut Oil0 NP--
Vitamin E200 mg1333%

Other ingredients: Quik-Sorb

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.
Formula

Liquid Vitamin E is enhanced with Quik-sorb, an exclusive blend of herbs known to enhance delivery of nutrients to the body.

With Quik-Sorb

Natural mixed Tocopherols with olive oil, avocado oil, & macadamia oil

General Statements

High-quality natural products for vital, healthy lifestyles since 1972. Unconditionally Guaranteed.

FDA Disclaimer Statement

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

Precautions

Warning: Keep out of reach of children.

Do not use if safety seal is damaged or missing.

If you are pregnant, nursing, taking any medications, planning any medical procedure or have a medical condition, consult with your healthcare practitioner before use.

Contains: Tree Nut (Macadamia Nut) and Soy.

Brand IP Statement(s)

Quik-Sorb is a registered trademark of Bio-Botanica Inc.

Copyright 2020 Nature's Answer

Nature's Answer Since 1972

Formulation

Gluten Free

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Suggested use: As a dietary supplement, take one 1/2 (0.5) of a teaspoon daily. May be mixed with water or food. Do not shake before use.

Storage

Refrigerate after opening.

See for yourself

Liquid Vitamin E by Nature's Answer label

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

What’s inside

The Ingredients in Liquid Vitamin E by Nature's Answer

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

Serving size2.5 mL Dosage formLiquid Servings per container96 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.

Proprietary Oil Blend

1800 mg per serving

Vitamin E

Interacts with
764 drugs
200 mg per serving Form: Mixed Tocopherols

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: Quik-Sorb. These complete the product’s ingredient list but are not active constituents.

Interaction report

Liquid Vitamin E by Nature's Answer Drug Interactions

Want to check YOUR meds against Liquid 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 checker
764Drugs
763 Moderate 1 Minor

Ingredients driving the most interactions

Vitamin E 764

Each ingredient & the kinds of drugs it affects

For each ingredient in Liquid Vitamin E 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

Avocado Oil1 drug type · 2 drugs

Warfarin (Coumadin)

Avocado may antagonize the anticoagulant effects of warfarin.
Avocado may antagonize the anticoagulant effects of warfarin; however, there has been only one case report of this interaction.

Likelihood Unlikely Evidence D
The maker

Brand information

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

Nature's Answer

See all Nature's Answer products
Name
Nature's Answer
Street Address
85 Commerce Drive
City
Hauppauge
State
NY
ZipCode
11788
Phone Number
(800) 439-2324
Web Address
www.naturesanswer.com
Pharmacist Counseling Corner

Liquid Vitamin E by Nature's Answer: Common Questions

Does Liquid Vitamin E by Nature's Answer interact with any medications?
Yes. Based on its ingredients, Liquid Vitamin E has a known interaction with 764 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Liquid Vitamin E 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.
Is this safe to take if I'm pregnant?
Vitamin E at normal dietary amounts is possibly safe in pregnancy, but avoid high-dose supplements without your doctor's approval. Avocado oil and olive oil as foods are fine, but the safety of concentrated supplements in pregnancy isn't well known — talk with your doctor. Macadamia nut oil is generally considered safe in pregnancy if you're not allergic to nuts.
Can I take this while breastfeeding?
Vitamin E at normal dietary amounts is likely safe while breastfeeding, though high-dose supplements need your doctor's clearance. Avocado oil and olive oil safety in breastfeeding supplements isn't established. Macadamia nut oil is generally safe while breastfeeding if you have no nut allergy.
What is vitamin E actually used for?
Vitamin E treats vitamin E deficiency and a genetic condition called AVED (ataxia with vitamin E deficiency). It's possibly effective for Alzheimer disease, certain blood disorders, and some types of brain bleeding, though evidence varies.
Could I have an allergic reaction to this?
Yes. If you're allergic to latex, avocado may trigger an allergic reaction. Macadamia nut oil can cause allergic reactions including anaphylaxis in people with nut allergies. Olive pollen can cause seasonal respiratory allergy in sensitive people.
What side effects might I experience?
Most common are headache and stomach discomfort from the olive oil. High-dose vitamin E raises the risk of bleeding. Avocado can rarely cause severe vomiting and diarrhea (FPIES), especially in young children. Topical avocado cream with vitamin B12 may cause itching.
Does this help with high cholesterol?
Avocado oil and macadamia nut oil are possibly effective for high cholesterol, but evidence is limited. Olive oil hasn't enough evidence to rate for cholesterol in our data.

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.

Liquid Vitamin E label
Sources

Sources & How We Checked

Liquid 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.

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 87 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.

Olive 2 references
  1. Liccardi G, D'Amato M, D'Amato G. Oleaceae pollinosis: a review. Int Arch Allergy Immunol 1996;111:210-7. PubMed
  2. Somerville V, Moore R, Braakhuis A. The effect of olive leaf extract on upper respiratory illness in high school athletes: A randomised control trial. Nutrients. 2019;11(2). pii: E358. PubMed

See these in context on the Olive monograph →

Avocado 10 references
  1. Blickstein D, Shaklai M, Inbal A. Warfarin antagonism by avocado. Lancet 1991;337:914-5. PubMed
  2. Blanco C, Diaz-Perales A, Collada C, et al. Class I chitinases as potential panallergens involved in the latex-fruit syndrome. J Allergy Clin Immunol 1999;103(3 Pt 1):507-13. PubMed
  3. Diaz-Perales A, Collada C, Blanco C, et al. Cross-reactions in the latex-fruit syndrome: A relevant role of chitinases but not of complex asparagine-linked glycans. J Allergy Clin Immunol 1999;104:681-7. PubMed
  4. Stucker M, Memmel U, Hoffmann M, et al. Vitamin B(12) cream containing avocado oil in the therapy of plaque psoriasis. Dermatology 2001;203:141-7.
  5. Ahlroth, M., Alenius, H., Turjanmaa, K., Makinen-Kiljunen, S., Reunala, T., and Palosuo, T. Cross-reacting allergens in natural rubber latex and avocado. J.Allergy Clin.Immunol. 1995;96(2):167-173. PubMed
  6. de Groot, A. C., van der Meeren, H. L., and Weyland, J. W. Contact allergy to avocado oil in a sunscreen. Contact Dermatitis 1987;16(2):108-109. PubMed
  7. Blanco, C., Carrillo, T., Castillo, R., Quiralte, J., and Cuevas, M. Avocado hypersensitivity. Allergy 1994;49(6):454-459. PubMed
  8. Crisi, G. and Belsito, D. V. Contact urticaria from latex in a patient with immediate hypersensitivity to banana, avocado and peach. Contact Dermatitis 1993;28(4):247-248.
  9. Cherian S, Neupert K, Varshney P. Avocado as an emerging trigger for food protein-induced enterocolitis syndrome. Ann Allergy Asthma Immunol. 2018;121(3):369-71. PubMed
  10. Lichtenstein AH, Kris-Etherton PM, Petersen KS, et al. Effect of Incorporating 1 Avocado Per Day Versus Habitual Diet on Visceral Adiposity: A Randomized Trial. J Am Heart Assoc 2022;11(14):e025657.

See these in context on the Avocado monograph →

Macadamia Nut 11 references
  1. Garg ML, Blake RJ, Wills RB. Macadamia nut consumption lowers plasma total and LDL cholesterol levels in hypercholesterolemic men. J Nutr 2003;133:1060-3. PubMed
  2. Curb JD, Wergowske G, Dobbs JC, et al. Serum lipid effects of a high-monounsaturated fat diet based on macadamia nuts. Arch Intern Med 2000;160:1154-8. PubMed
  3. Lerch M, Egger C, Bircher AJ. Allergic reactions to macadamia nut. Allergy 2005;60:130-1. PubMed
  4. Pallares DE. Allergy to macadamia nut. Ann Allergy Asthma Immunol 2000;85:385-6. PubMed
  5. Teuber SS, Brown RL, Haapanen LA. Allergenicity of gourmet nut oils processed by different methods. J Allergy Clin Immunol 1997;99:502-7. PubMed
  6. Knight TE, Hausen BM. Dermatitis in a nutshell: occupational exposure to Macadamia integrifolia. J Am Acad Dermatol 1996;35:482-4. PubMed
  7. De Knop KJ, Hagendorens MM, Bridts CH, Stevens WJ, Ebo DG. Macadamia nut allergy: 2 case reports and a review of the literature. Acta Clin Belg. 2010;65(2):129-32.
  8. Randhawa I, Morphew T, Marsteller NL. Correlation of negative skin-prick test results for tree nuts and successful tree nut challenges among children with peanut allergy. Allergy Asthma Proc. 2018;39(6):456-460. PubMed
  9. Polk BI, Dinakarpandian D, Nanda M, Barnes C, Dinakar C. Association of tree nut and coconut sensitizations. Ann Allergy Asthma Immunol. 2016;117(4):412-416. PubMed
  10. Ekbote A, Hayman G, Bansal A. Macadamia nut allergy: potentially misleading specific IgE results. Allergy. 2010;65(10):1345. PubMed
  11. Herbst RA, Wahl R, Frosch PJ. Specific IgE reactivity and identification of potential allergens in macadamia allergy. J Eur Acad Dermatol Venereol. 2010;24(11):1361-3. PubMed

See these in context on the Macadamia Nut monograph →

Vitamin E 64 references
  1. Kim JM, White RH. Effect of vitamin E on the anticoagulant response to warfarin. Am J Cardiol 1996;77:545-6. PubMed
  2. Corrigan JJ Jr. The effect of vitamin E on warfarin-induced vitamin K deficiency. Ann N Y Acad Sci 1982;393:361-8. PubMed
  3. Corrigan JJ Jr. Coagulation problems relating to vitamin E. Am J Pediatr Hematol Oncol 1979;1:169-73.
  4. Corrigan JJ Jr, Marcus FI. Coagulopathy associated with vitamin E ingestion. JAMA 1974;230:1300-1. DOI
  5. Labriola D, Livingston R. Possible interactions between dietary antioxidants and chemotherapy. Oncology 1999;13:1003-8.
  6. 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
  7. 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
  8. Anon. Dietary supplementation with n-3 polyunsaturated fatty acids and vitamin E after myocardial infarction: results of the GISSI-Prevenzione trial. Gruppo Italiano per lo Studio della Soprawivenza nell'Infarto miocardico. Lancet 1999;354:447-55. DOI
  9. Chappell LC, Seed PT, Briley AL, et al. Effect of antioxidants on the occurrence of pre-eclampsia in women at increased risk: a randomised trial. Lancet 1999;354:810-6. DOI
  10. Yusuf S, Dagenais G, Pogue J, et al. Vitamin E supplementation and cardiovascular events in high-risk patients. The heart outcomes prevention evaluation study investigators. N Engl J Med 2000;342:154-60. PubMed
  11. Stephens NG, Parsons A, Schofield PM, et al. Randomised controlled trial of vitamin E in patients with coronary disease: Cambridge Heart Antioxidant Study. Lancet 1996;347:781-6.
  12. The Alpha-Tocopherol, Beta Carotene Cancer Prevention Study Group. The effect of vitamin E and beta carotene on the incidence of lung cancer and other cancers in male smokers. N Engl J Med 1994;330:1029-35. PubMed
  13. Takahashi O. Haemorrhagic toxicity of a large dose of alpha-, beta-, gamma- and delta-tocopherols, ubiquinone, beta-carotene, retinol acetate and L-ascorbic acid in the rat. Food Chem Toxicol 1995;33:121-8.
  14. Briggs GB, Freeman RK, Yaffe SJ. Drugs in Pregnancy and Lactation. 5th ed. Philadelphia, PA: Lippincott Williams & Wilkins; 1998.
  15. Sano M, Ernesto C, Thomas RG, et al. A controlled trial of selegiline, alpha-tocopherol, or both as treatment for Alzheimer's disease. The Alzheimer's Disease Cooperative Study. N Engl J Med 1997;336:1216-22. PubMed
  16. Liede KE, Haukka JK, Saxen LM, Heinonen OP. Increased tendency towards gingival bleeding caused by joint effect of alpha-tocopherol supplementation and acetylsalicylic acid. Ann Med 1998;30:542-6.
  17. Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Vitamin C, Vitamin E, Selenium, and Carotenoids. Washington, DC: National Academy Press, 2000. Available at: http://www.nap.edu/books/0309069351/html/.
  18. Brown BG, Zhao XQ, Chait A, et al. Simvastatin and niacin, antioxidant vitamins, or the combination for the prevention of coronary disease. N Engl J Med 2001;345:1583-93. DOI
  19. Liu M, Wallmon A, Olsson-Mortlock C, et al. Mixed tocopherols inhibit platelet aggregation in humans: potential mechanisms. Am J Clin Nutr 2003;77:700-6. PubMed
  20. Sokol RJ, Johnson KE, Karrer FM, et al. Improvement of cyclosporin absorption in children after liver transplantation by means of water-soluble vitamin E. Lancet 1991;338:212-4.. PubMed
  21. Stein JH, Carlsson CM, Papcke-Benson K, et al. The effects of lipid-lowering and antioxidant vitamin therapies on flow-mediated vasodilation of the brachial artery in older adults with hypercholesterolemia. J Am Coll Cardiol 2001;38:1806-13.. PubMed
  22. Carlsson CM, Papcke-Benson K, Carnes M, et al. Health-related quality of life and long-term therapy with pravastatin and tocopherol (vitamin E) in older adults. Drugs Aging 2002;19:793-805. . PubMed
  23. Cheung MC, Zhao XQ, Chait A, et al. Antioxidant supplements block the response of HDL to simvastatin-niacin therapy in patients with coronary artery disease and low HDL. Arterioscler Thromb Vasc Biol 2001;21:1320-6. PubMed
  24. Schrogie JJ. Coagulopathy and fat-soluble vitamins (letter). JAMA 1975;232:19. DOI
  25. Celestini A, Pulcinelli FM, Pignatelli P, et al. Vitamin E potentiates the antiplatelet activity of aspirin in collagen-stimulated platelets. Haematologica 2002;87:420-6.
  26. Stampfer MJ, Jakubowski JA, Faigel D, et al. Vitamin E supplementation effect on human platelet function, arachidonic acid metabolism, and plasma prostacyclin levels. Am J Clin Nutr 1988;47:700-6. PubMed
  27. Jandak J, Steiner M, Richardson PD. Alpha-tocopherol, an effective inhibitor of platelet adhesion. Blood 1989;73:141-9. DOI
  28. Freedman JE, Farhat JH, Loscalzo J, Keaney JF. Alpha-tocopherol inhibits aggregation of human platelets by a protein kinase C-dependent mechanism. Circulation 1996;94:2434-40. PubMed
  29. Steiner M. Vitamin E, a modifier of platelet function: rationale and use in cardiovascular and cerebrovascular disease. Nutr Rev 1999;57:306-9. PubMed
  30. Brodkin RH, Bleiberg J. Sensitivity to topically applied vitamin E. Arch Dermatol 1965;92:76-7. DOI
  31. Booth SL, Golly I, Sacheck JM, et al. Effect of vitamin E supplementation on vitamin K status in adults with normal coagulation status. Am J Clin Nutr 2004;80:143-8. PubMed
  32. Miller ER 3rd, Pastor-Barriuso R, Dalal D, et al. Meta-analysis: High-dosage vitamin E supplementation may increase all-cause mortality. Ann Intern Med 2005;142:60520-53. PubMed
  33. Lonn E, Bosch J, Yusuf S, et al. HOPE and HOPE-TOO Trial Investigators. Effects of long-term vitamin E supplementation on cardiovascular events and cancer: a randomized controlled trial. JAMA 2005;293:1338-47. PubMed
  34. Landes N, Pfluger P, Kluth D, et al. Vitamin E activates gene expression via the pregnane X receptor. Biochem Pharmacol 2003;65:269-73. . PubMed
  35. Brigelius-Flohe R. Vitamin E and drug metabolism. Biochem Biophys Res Commun 2003;305:737-40. PubMed
  36. Prasad KN. Rationale for using high-dose multiple dietary antioxidants as an adjunct to radiation therapy and chemotherapy. J Nutr 2004;134:3182S-3S. PubMed
  37. Conklin KA. Cancer chemotherapy and antioxidants. J Nutr 2004;134:3201S-3204S. PubMed
  38. Schurks M, Glynn RJ, Rist PM, et al. Effects of vitamin E on stroke subtypes: meta-analysis of randomized controlled trials. BMJ 2010;341: c5702. doi: 10.1136/bmj.c5702.
  39. Lawson KA, Wright ME, Subar A, et al. Multivitamin use and risk of prostate cancer in the National Institutes of Health-AARP Diet and Health Study. J Natl Cancer Inst 2007;99:754-64. PubMed
  40. Gaziano JM, Glynn RJ, Christen WG, et al. Vitamins E and C in the prevention of prostate total cancer in men: the physicians' health study II randomised controlled trial. JAMA 2009;301:52-62.
  41. Hayden KM, Welsh-Bohmer KA, Wengreen HJ, et al; Cache County Investigators. Risk of mortality with vitamin E supplements: the Cache County study. Am L Med 2007;120:180-4. PubMed
  42. Smedts HP, de Vries JH, Rakhshandehroo M, et al. High maternal vitamin E intake by diet or supplements is associated with congenital heart defects in the offspring. BJOG 2009;116:416-23. PubMed
  43. Klein EA, Thompson IM Jr, Tangen CM, et al. Vitamin E and the risk of prostate cancer: the Selenium and Vitamin E Cancer Prevention Trial (SELECT). JAMA 2011;306:1549-56. PubMed
  44. Huang, H. Y., Caballero, B., Chang, S., Alberg, A. J., Semba, R. D., Schneyer, C. R., Wilson, R. F., Cheng, T. Y., Vassy, J., Prokopowicz, G., Barnes, G. J., and Bass, E. B. The efficacy and safety of multivitamin and mineral supplement use to prevent ca
  45. Sesso, H. D., Buring, J. E., Christen, W. G., Kurth, T., Belanger, C., MacFadyen, J., Bubes, V., Manson, J. E., Glynn, R. J., and Gaziano, J. M. Vitamins E and C in the prevention of cardiovascular disease in men: the Physicians' Health Study II randomiz
  46. Papaioannou, D., Cooper, K. L., Carroll, C., Hind, D., Squires, H., Tappenden, P., and Logan, R. F. Antioxidants in the chemoprevention of colorectal cancer and colorectal adenomas in the general population: a systematic review and meta-analysis. Colorec PubMed
  47. Cooper, K., Squires, H., Carroll, C., Papaioannou, D., Booth, A., Logan, R. F., Maguire, C., Hind, D., and Tappenden, P. Chemoprevention of colorectal cancer: systematic review and economic evaluation. Health Technol.Assess. 2010;14(32):1-206. PubMed
  48. Mathew, M. C., Ervin, A. M., Tao, J., and Davis, R. M. Antioxidant vitamin supplementation for preventing and slowing the progression of age-related cataract. Cochrane.Database.Syst.Rev. 2012;6:CD004567. PubMed
  49. Rahimi, R., Nikfar, S., Rezaie, A., and Abdollahi, M. A meta-analysis on the efficacy and safety of combined vitamin C and E supplementation in preeclamptic women. Hypertens.Pregnancy. 2009;28(4):417-434. PubMed
  50. Soares, K. V. and McGrath, J. J. Vitamin E for neuroleptic-induced tardive dyskinesia. Cochrane.Database.Syst.Rev. 2001;(4):CD000209. DOI
  51. Roed-Petersen, J. and Hjorth, N. Contact dermatitis from antioxidants. Br.J.Dermatol. 1976;94(3):233-241. PubMed
  52. Brion, L. P., Bell, E. F., Raghuveer, T. S., and Soghier, L. What is the appropriate intravenous dose of vitamin E for very-low-birth-weight infants? J.Perinatol. 2004;24(4):205-207. PubMed
  53. Manny, T., Pettus, J., Hemal, A., Marks, M., and Mirzazadeh, M. Penile sclerosing lipogranulomas and disfigurement from use of "1Super Extenze" among Laotian immigrants. J.Sex Med. 2011;8(12):3505-3510. PubMed
  54. Musso, G., Cassader, M., Rosina, F., and Gambino, R. Impact of current treatments on liver disease, glucose metabolism and cardiovascular risk in non-alcoholic fatty liver disease (NAFLD): a systematic review and meta-analysis of randomised trials. Diabe PubMed
  55. Bell, E. F. Upper limit of vitamin E in infant formulas. J.Nutr. 1989;119(12 Suppl):1829-1831. PubMed
  56. Manzano, D., Aguirre, A., Gardeazabal, J., Eizaguirre, X., and Diaz Perez, J. L. Allergic contact dermatitis from tocopheryl acetate (vitamin E) and retinol palmitate (vitamin A) in a moisturizing cream. Contact Dermatitis 1994;31(5):324.
  57. Barak, Y., Swartz, M., Shamir, E., Stein, D., and Weizman, A. Vitamin E (alpha-tocopherol) in the treatment of tardive dyskinesia: a statistical meta-analysis. Ann.Clin.Psychiatry 1998;10(3):101-105.
  58. Chae CU, Albert CM, Moorthy MV, et al. Vitamin E supplementation and the risk of heart failure in women. Circ Heart Fail. 2012;5(2):176-82. PubMed
  59. Rumbold A, Ota E, Hori H, Miyazaki C, Crowther CA. Vitamin E supplementation in pregnancy. Cochrane Database Syst Rev. 2015;(9):CD004069. PubMed
  60. Prescribing information: KOSELUGO (selumetinib) capsules. U.S. Food and Drug Administration. Available at: https://www.accessdata.fda.gov/drugsatfda_docs/label/2020/213756s000lbl.pdf.
  61. Warshaw EM, Ruggiero JL, DeKoven JG, et al. Patch testing with tocopherol and tocopherol acetate: the North American Contact Dermatitis Group experience, 2001 to 2016. Dermatitis. 2021;32(5):308-18. PubMed
  62. US Preventive Services Task Force, Mangione CM, Barry MJ, et al. Vitamin, Mineral, and Multivitamin Supplementation to Prevent Cardiovascular Disease and Cancer: US Preventive Services Task Force Recommendation Statement. JAMA 2022;327(23):2326-2333. PubMed
  63. Abrol R, Kaushik R, Goel D, Sama S, Kaushik RM, Kala M. Vitamin E-induced coagulopathy in a young patient: a case report. J Med Case Rep 2023;17(1):107. PubMed
  64. Abtahi-Naeini B, Rastegarnasab F, Saffaei A. Liquid vitamin E injection for cosmetic facial rejuvenation: A disaster report of lipogranuloma. J Cosmet Dermatol 2022;21(11):5549-5554. PubMed

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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.

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