Natural Vitamin E-1000 Complex Ingredients & Drug Interactions
by tnvitamins
What is this page for?
First and foremost: checking Natural Vitamin E-1000 Complex 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
Natural Vitamin E-1000 Complex is a dietary supplement by tnvitamins 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 Natural Vitamin E-1000 Complex by tnvitamins
Ask about any prescription or over-the-counter medication and we check it for interactions with Natural Vitamin E-1000 Complex by tnvitamins — 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 Natural Vitamin E-1000 Complex by tnvitamins
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: vitamin E at 1000 IU per softgel. The inactive ingredients are gelatin, vegetable glycerin, and soybean oil — these are the capsule material and base that carry the active vitamin.
Does it work?
Strong evidence
Vitamin E is effective for treating vitamin E deficiency itself and a rare genetic condition called AVED (ataxia with vitamin E deficiency). The evidence is less established for other uses — it's rated possibly effective for Alzheimer disease, beta-thalassemia, G6PD deficiency, and intracranial hemorrhage, meaning the data suggests a benefit but isn't conclusive yet.
How safe is it?
Well-documented data
Vitamin E from food and normal amounts are well tolerated. This product contains a high dose (1000 IU daily), and long-term use at this level may increase the risk of bleeding and other complications.
Serious adverse effects are rare but include bleeding, hemorrhagic stroke (a type of brain bleed), and other heart and blood vessel problems. There's also a specific concern that high-dose vitamin E might raise the risk of hemorrhagic stroke, especially in male smokers, though other studies have not consistently shown this.
For pregnancy, vitamin E from food and prenatal vitamins is appropriate, but high-dose supplements should only be taken if your doctor directs it. During breastfeeding, normal dietary amounts are fine, but check with your doctor before taking high-dose supplements.
There isn't enough safety data for this specific high dose in lactation to say it's definitely safe.
Meds to double-check
Moderate interaction found
Before taking this product, check with your doctor or pharmacist if you take blood thinners (anticoagulants) or antiplatelet drugs like warfarin — vitamin E at this dose can increase bleeding risk. Also confirm it's safe if you're on certain liver-metabolized drugs (CYP3A4 substrates), chemotherapy agents (alkylating agents or antitumor antibiotics), cyclosporine, selumetinib, or niacin.
No interactions are documented for the inactive ingredients.
The bottom line
Scorecard at a glanceFully disclosed formula with strong clinical evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.
This 1000 IU dose of vitamin E is useful if you have a vitamin E deficiency or AVED, or if your doctor recommends it for another reason. If you take any blood thinner, antiplatelet drug, chemotherapy, or certain other medications, you need to clear this with your doctor or pharmacist first — the high dose and medication interactions are real.
Talk with your healthcare provider about whether this dose is right for you and whether it's safe alongside anything else you're taking.
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 23, 2020.
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 Natural Vitamin E-1000 Complex, straight from the product label.
| Brand | tnvitamins |
|---|---|
| Barcode (UPC) | 095234105522 |
| Net contents | 100 Softgel(s) |
| Market status | On market |
| Date entered into DSLD | Apr 23, 2020 |
| DSLD ID | 217883 |
| Product type | Vitamin |
| Supplement form | Softgel Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years), Gluten Free, Dairy Free, Sugar Free |
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 Natural Vitamin E-1000 Complex by tnvitamins, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Vitamin E | 1000 IU | 3333% |
Other ingredients: Gelatin, Vegetable Glycerin, Soybean 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.
FDA Statement of Identity
Dietary Supplement
General Statements
To reorder visit us at: www.tnvitamins.com or call: 1-800-645-4446
Suggested/Recommended/Usage/Directions
Directions: As a dietary supplement for adults, take one (1) softgel daily, preferably with a meal, or as directed by a health care professional.
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
Guaranteed free of: Sugar, starch, milk, lactose, gluten, wheat, yeast, fish, sodium & preservatives. Artificial color, flavor or sweetener.
Precautions
Caution: Pregnant or lactating women should consult a doctor before use.
If you are under medical supervision, please consult a doctor before use. Discontinue use and consult a doctor if any adverse reactions occur.
Keep out of reach of children. Not intended for use by persons under the age of 18.
Storage
Store at room temperature.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Natural Vitamin E-1000 Complex by tnvitamins 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 Natural Vitamin E-1000 Complex by tnvitamins
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 Servings per container100 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: Gelatin, Vegetable Glycerin, Soybean Oil. These complete the product’s ingredient list but are not active constituents.
Natural Vitamin E-1000 Complex by tnvitamins Drug Interactions
HelloPharmacist Interaction Report
Natural Vitamin E-1000 Complex by tnvitamins contains vitamin E, which does interact with a number of medications.
The most serious concern is with blood thinners (anticoagulants) and antiplatelet drugs — vitamin E can increase bleeding risk, and this effect is dose-dependent. At the 1000 IU dose in this product, the risk is real enough that you need to check with your doctor or pharmacist before combining it with warfarin or similar medications.
Read the full breakdown — every affected drug type, severity by severity
Vitamin E also affects how your body metabolizes certain drugs through the liver (CYP3A4 substrates), potentially lowering their levels and effectiveness. It may similarly interfere with several types of chemotherapy — alkylating agents and antitumor antibiotics — by reducing their activity.
Additionally, taking this with niacin might blunt niacin's beneficial effect on HDL cholesterol. One specific form of vitamin E can increase cyclosporine absorption, though this product uses a standard form; still, if you take cyclosporine, confirm this is safe for you.
There's also a caution with selumetinib (Koselugo), a cancer drug that already contains vitamin E — combining them could push your total dose too high and raise bleeding risk. Altogether, these interactions span 765 individual medications.
Check your exact medications with the search tool on this page before starting.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Natural Vitamin E-1000 Complex?
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 Natural Vitamin E-1000 Complex interact with 764 drugs. Click any drug to see the details.
1 of the 1 ingredient in Natural Vitamin E-1000 Complex interact with drugs. Each result below shows which ingredient is responsible. Vitamin E
AmlodipineNorliqva
How Amlodipine interacts with Natural Vitamin E-1000 Complex — 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 + Amlodipine interactionAmlodipine BenzoateKaterzia
How Amlodipine Benzoate interacts with Natural Vitamin E-1000 Complex — 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 + Amlodipine Benzoate interactionAmlodipine BesilateIstin
How Amlodipine Besilate interacts with Natural Vitamin E-1000 Complex — 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 + Amlodipine Besilate interactionAmlodipine BesylateNorvasc
How Amlodipine Besylate interacts with Natural Vitamin E-1000 Complex — 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 + Amlodipine Besylate interactionAmlodipine Besylate, BenazeprilLotrel
How Amlodipine Besylate, Benazepril interacts with Natural Vitamin E-1000 Complex — 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 + Amlodipine Besylate, Benazepril interactionAmlodipine, CelecoxibConsensi
How Amlodipine, Celecoxib interacts with Natural Vitamin E-1000 Complex — 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 + Amlodipine, Celecoxib interactionAmoxicillin, Omeprazole Magnesium, RifabutinTalicia
How Amoxicillin, Omeprazole Magnesium, Rifabutin interacts with Natural Vitamin E-1000 Complex — 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 + Amoxicillin, Omeprazole Magnesium, Rifabutin interactionAmprenavirAgenerase
How Amprenavir interacts with Natural Vitamin E-1000 Complex — 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 + Amprenavir interactionAnacaulase-bcdbNexoBrid
How Anacaulase-bcdb interacts with Natural Vitamin E-1000 Complex — 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 + Anacaulase-bcdb interactionAnagrelideAgrylin
How Anagrelide interacts with Natural Vitamin E-1000 Complex — 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 + Anagrelide interactionAnisindioneMiradon
How Anisindione interacts with Natural Vitamin E-1000 Complex — 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 + Anisindione interactionAntithrombin IiiThrombate III
How Antithrombin Iii interacts with Natural Vitamin E-1000 Complex — 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 + Antithrombin Iii interactionApalutamideErleada
How Apalutamide interacts with Natural Vitamin E-1000 Complex — 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 + Apalutamide interactionApixabanEliquis
How Apixaban interacts with Natural Vitamin E-1000 Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin EAnticoagulant/antiplatelet Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Concomitant use of vitamin E and anticoagulant or antiplatelet agents might increase the risk of bleeding.
Read the full Vitamin E + Apixaban interactionApremilastOtezla
How Apremilast interacts with Natural Vitamin E-1000 Complex — 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 + Apremilast interactionAprepitantCinvanti, Emend
How Aprepitant interacts with Natural Vitamin E-1000 Complex — 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 + Aprepitant interactionArgatrobanArgatroban
How Argatroban interacts with Natural Vitamin E-1000 Complex — 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 + Argatroban interactionAripiprazoleAbilify, Abilify Maintena, Abilify Mycite
How Aripiprazole interacts with Natural Vitamin E-1000 Complex — 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 + Aripiprazole interactionAripiprazole LauroxilAristada, Aristada Initio Kit
How Aripiprazole Lauroxil interacts with Natural Vitamin E-1000 Complex — 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 + Aripiprazole Lauroxil interactionArmodafinilNuvigil
How Armodafinil interacts with Natural Vitamin E-1000 Complex — 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 + Armodafinil interactionAspirinAngettes 75, ASA, Asaphen, Aspirin, Caprin, Cartia +8 more
How Aspirin interacts with Natural Vitamin E-1000 Complex — 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 + Aspirin interactionAspirin, Aluminum Hydroxide, Codeine Phosphate, Magnesium HydroxideAscriptin Codeine #3
How Aspirin, Aluminum Hydroxide, Codeine Phosphate, Magnesium Hydroxide interacts with Natural Vitamin E-1000 Complex — 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 + Aspirin, Aluminum Hydroxide, Codeine Phosphate, Magnesium Hydroxide interactionAspirin, ButalbitalAxotal
How Aspirin, Butalbital interacts with Natural Vitamin E-1000 Complex — 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 + Aspirin, Butalbital interactionAspirin, Butalbital, CaffeineFiorinal
How Aspirin, Butalbital, Caffeine interacts with Natural Vitamin E-1000 Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin EAnticoagulant/antiplatelet Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Concomitant use of vitamin E and anticoagulant or antiplatelet agents might increase the risk of bleeding.
Read the full Vitamin E + Aspirin, Butalbital, Caffeine interactionAspirin, Butalbital, Caffeine, Codeine PhosphateFiorinal w/ Codeine
How Aspirin, Butalbital, Caffeine, Codeine Phosphate interacts with Natural Vitamin E-1000 Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates, Anticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Aspirin, Butalbital, Caffeine, Codeine Phosphate interactionAspirin, Butalbital, Caffeine, PhenacetinMarnal
How Aspirin, Butalbital, Caffeine, Phenacetin interacts with Natural Vitamin E-1000 Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin EAnticoagulant/antiplatelet Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Concomitant use of vitamin E and anticoagulant or antiplatelet agents might increase the risk of bleeding.
Read the full Vitamin E + Aspirin, Butalbital, Caffeine, Phenacetin interactionAspirin, CaffeineAnacin
How Aspirin, Caffeine interacts with Natural Vitamin E-1000 Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates, Anticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Aspirin, Caffeine interactionAspirin, Caffeine, Codeine PhosphateAnacin w/ Codeine
How Aspirin, Caffeine, Codeine Phosphate interacts with Natural Vitamin E-1000 Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin EAnticoagulant/antiplatelet Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Concomitant use of vitamin E and anticoagulant or antiplatelet agents might increase the risk of bleeding.
Read the full Vitamin E + Aspirin, Caffeine, Codeine Phosphate interactionAspirin, Caffeine, Dihydrocodeine BitartrateSynalgos DC
How Aspirin, Caffeine, Dihydrocodeine Bitartrate interacts with Natural Vitamin E-1000 Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ECytochrome P450 3a4 (cyp3a4) Substrates, Anticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, vitamin E might induce metabolism of CYP3A4, possibly reducing the levels CYP3A4 substrates.
Read the full Vitamin E + Aspirin, Caffeine, Dihydrocodeine Bitartrate interactionAspirin, Caffeine, Dover's PwdAcedoval, Dovacet
How Aspirin, Caffeine, Dover's Pwd interacts with Natural Vitamin E-1000 Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin EAnticoagulant/antiplatelet Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Concomitant use of vitamin E and anticoagulant or antiplatelet agents might increase the risk of bleeding.
Read the full Vitamin E + Aspirin, Caffeine, Dover's Pwd interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Natural Vitamin E-1000 Complex 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 Natural Vitamin E-1000 Complex, from the product label.
tnvitamins
See all tnvitamins products- Name
- Total Nutrition, Inc.
- City
- Farmingdale
- State
- NY
- ZipCode
- 11735
- Phone Number
- 1-800-645-4446
- Web Address
- www.tnvitamins.com
Natural Vitamin E-1000 Complex by tnvitamins: Common Questions
Does Natural Vitamin E-1000 Complex by tnvitamins interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Does this dose of vitamin E really increase bleeding risk?
Can I take this if I'm on chemotherapy?
Is vitamin E safe to take during pregnancy?
What is vitamin E actually used for?
What are the side effects at this dose?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Natural Vitamin E-1000 Complex 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 Natural Vitamin E-1000 Complex’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Natural Vitamin E-1000 Complex'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
- 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
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