Sunflower E 400 IU Ingredients & Drug Interactions
by VitalBulk
What is this page for?
First and foremost: checking Sunflower E 400 IU against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.
Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy
Sunflower E 400 IU is a dietary supplement by VitalBulk 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 Sunflower E 400 IU by VitalBulk
Ask about any prescription or over-the-counter medication and we check it for interactions with Sunflower E 400 IU by VitalBulk — 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 Sunflower E 400 IU by VitalBulk
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 400 IU per softgel capsule. The inactive ingredients are gelatin, glycerin, and rosemary extract — the first two form and fill the capsule, and the third is added as an antioxidant preservative.
Does it work?
Strong evidence
Vitamin E is effective for preventing and treating vitamin E deficiency and for AVED (ataxia with vitamin E deficiency), a rare inherited disorder. The evidence is possibly effective for Alzheimer disease, beta-thalassemia, G6PD deficiency, and intracranial hemorrhage, meaning some research suggests benefit but more study is needed.
How safe is it?
Well-documented data
Vitamin E from food and normal dietary amounts is generally well-tolerated. High-dose long-term supplements like this one, however, carry caution flags.
At higher doses, vitamin E raises the risk of bleeding, and there's concern it may increase the risk of hemorrhagic stroke, especially in male smokers taking synthetic forms over years. The most serious rare adverse effects are bleeding, hemorrhagic stroke, and cardiovascular complications.
For pregnancy, amounts from food and prenatal vitamins are fine, but high-dose supplements should only be taken if your doctor directs it. For breastfeeding, normal dietary amounts are okay, but talk to your doctor before taking high-dose supplements.
We don't have specific safety data on file for breastfeeding — get personalized advice from your healthcare provider.
Meds to double-check
Moderate interaction found
Before taking this product, check with your pharmacist if you take blood thinners or antiplatelet drugs (including warfarin), cancer medications, cyclosporine, drugs broken down by CYP3A4, or niacin. These interactions are rated Moderate or Minor severity and require individual review of your prescriptions.
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.
Consider this product if you have vitamin E deficiency or AVED. Be cautious if you take blood thinners, cancer drugs, or cyclosporine — all require a pharmacist check first.
Don't start high-dose vitamin E without asking your doctor, especially if you smoke, are pregnant, breastfeeding, or have bleeding concerns.
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 Nov 21, 2019.
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 Sunflower E 400 IU, 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 Sunflower E 400 IU by VitalBulk, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Vitamin E | 400 IU | 1333% |
Other ingredients: Gelatin, Glycerin, Rosemary extract
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
Food/Dietary Supplement
Suggested/Recommended/Usage/Directions
Suggested use: Take one (1) softgel daily with food. Do not exceed recommended daily dose unless directed by your health care practitioner.
Precautions
Do not exceed recommended daily dose unless directed by your health care practitioner.
Keep out of reach of children in a cool, dry place.
This product may be produced in a facility that also makes products containing milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, and soy.
Food supplements should not be used as a substitute for a varied diet.
In case of adverse event: 855-885-2855
Storage
Keep out of reach of children in a cool, dry place.
General Statements
Servings Per Container = Varied
Formulation
Tested gluten free Certified nonGE tested
Seals/Symbols
Tested gluten free Certified nonGE tested
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Sunflower E 400 IU by VitalBulk 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 Sunflower E 400 IU by VitalBulk
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: Gelatin, Glycerin, Rosemary extract. These complete the product’s ingredient list but are not active constituents.
Sunflower E 400 IU by VitalBulk Drug Interactions
HelloPharmacist Interaction Report
Sunflower E 400 IU by VitalBulk contains vitamin E, which has documented interactions with medications.
The most serious concern is with blood thinners (anticoagulants) and antiplatelet drugs — vitamin E can increase bleeding risk by interfering with how your blood clots. At 400 IU per dose, this product is right at the threshold where that risk becomes relevant, especially if you're taking warfarin or similar medications.
Read the full breakdown — every affected drug type, severity by severity
Vitamin E may also affect how your body processes certain cancer medications. It could theoretically reduce the effectiveness of chemotherapy drugs like doxorubicin or alkylating agents (such as cyclophosphamide) that work by generating free radicals.
If you're undergoing cancer treatment, this matters — don't add this supplement without talking to your oncologist first.
Additionally, vitamin E might speed up the breakdown of drugs metabolized by a liver enzyme called CYP3A4, potentially weakening their effect. It can also increase cyclosporine levels and may interfere with niacin's cholesterol benefits.
Altogether, these interactions span 754 individual medications. Use the medication checker below to verify your exact prescriptions before starting.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Sunflower E 400 IU?
Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.
Go to the checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in Sunflower E 400 IU interact with 764 drugs. Click any drug to see the details.
1 of the 1 ingredient in Sunflower E 400 IU interact with drugs. Each result below shows which ingredient is responsible. Vitamin E
Aspirin, Caffeine, HydrocodoneDamason-P
How Aspirin, Caffeine, Hydrocodone interacts with Sunflower E 400 IU — 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, Hydrocodone interactionAspirin, Caffeine, Isobutylallylbarbituric Acid, PhenacetinLanorinal
How Aspirin, Caffeine, Isobutylallylbarbituric Acid, Phenacetin interacts with Sunflower E 400 IU — 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, Isobutylallylbarbituric Acid, Phenacetin interactionAspirin, Caffeine, OrphenadrineInvagesic, Invagesic Forte, Norgesic, Norgesic Forte, Orphengesic, Orphengesic Forte
How Aspirin, Caffeine, Orphenadrine interacts with Sunflower E 400 IU — 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, Orphenadrine interactionAspirin, Caffeine, Phenacetin, PropoxypheneMargesic Comp. 65
How Aspirin, Caffeine, Phenacetin, Propoxyphene interacts with Sunflower E 400 IU — 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, Phenacetin, Propoxyphene interactionAspirin, Calcium Carbonate, Magnesium Carbonate, Magnesium OxideBufferin
How Aspirin, Calcium Carbonate, Magnesium Carbonate, Magnesium Oxide interacts with Sunflower E 400 IU — 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, Calcium Carbonate, Magnesium Carbonate, Magnesium Oxide interactionAspirin, CarisoprodolSoma Compound
How Aspirin, Carisoprodol interacts with Sunflower E 400 IU — 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, Carisoprodol interactionAspirin, Carisoprodol, Codeine PhosphateSoma Compound w/ Codeine
How Aspirin, Carisoprodol, Codeine Phosphate interacts with Sunflower E 400 IU — 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, Carisoprodol, Codeine Phosphate interactionAspirin, Chlorpheniramine, PhenylpropanolamineAlka-Seltzer Plus Cold
How Aspirin, Chlorpheniramine, Phenylpropanolamine interacts with Sunflower E 400 IU — 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, Chlorpheniramine, Phenylpropanolamine interactionAspirin, Citric Acid, Sodium BicarbonateAlka-Seltzer Pain Reliever and Antacid
How Aspirin, Citric Acid, Sodium Bicarbonate interacts with Sunflower E 400 IU — 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, Citric Acid, Sodium Bicarbonate interactionAspirin, Codeine PhosphateAspirin w/ Codeine
How Aspirin, Codeine Phosphate interacts with Sunflower E 400 IU — 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, Codeine Phosphate interactionAspirin, Codeine Phosphate, MethocarbamolRobaxisal C
How Aspirin, Codeine Phosphate, Methocarbamol interacts with Sunflower E 400 IU — 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, Codeine Phosphate, Methocarbamol interactionAspirin, Codeine Phosphate, PhenobarbitalPhenaphen
How Aspirin, Codeine Phosphate, Phenobarbital interacts with Sunflower E 400 IU — 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, Codeine Phosphate, Phenobarbital interactionAspirin, Diphenhydramine, PhenylpropanolamineAlka Seltzer Plus Night Time Effervescent
How Aspirin, Diphenhydramine, Phenylpropanolamine interacts with Sunflower E 400 IU — 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, Diphenhydramine, Phenylpropanolamine interactionAspirin, DipyridamoleAggrenox, Asasantin Retard
How Aspirin, Dipyridamole interacts with Sunflower E 400 IU — 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, Dipyridamole interactionAspirin, Ethoheptazine, MeprobamateEquagesic
How Aspirin, Ethoheptazine, Meprobamate interacts with Sunflower E 400 IU — 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, Ethoheptazine, Meprobamate interactionAspirin, HydrocodoneAlor 5 500, Lortab ASA
How Aspirin, Hydrocodone interacts with Sunflower E 400 IU — 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, Hydrocodone interactionAspirin, MeprobamateMicrainin
How Aspirin, Meprobamate interacts with Sunflower E 400 IU — 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, Meprobamate interactionAspirin, MethocarbamolRobaxisal
How Aspirin, Methocarbamol interacts with Sunflower E 400 IU — 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, Methocarbamol interactionAspirin, OmeprazoleYosprala
How Aspirin, Omeprazole interacts with Sunflower E 400 IU — 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, Omeprazole interactionAspirin, OxycodonePercodan
How Aspirin, Oxycodone interacts with Sunflower E 400 IU — 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, Oxycodone interactionAspirin, PentazocineTalwin Compound
How Aspirin, Pentazocine interacts with Sunflower E 400 IU — 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, Pentazocine interactionAtazanavirReyataz
How Atazanavir interacts with Sunflower E 400 IU — 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 + Atazanavir interactionAtazanavir, CobicistatEvotaz
How Atazanavir, Cobicistat interacts with Sunflower E 400 IU — 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 + Atazanavir, Cobicistat interactionAtogepantQulipta
How Atogepant interacts with Sunflower E 400 IU — 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 + Atogepant interactionAtorvastatinAtorvaliq
How Atorvastatin interacts with Sunflower E 400 IU — 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 + Atorvastatin interactionAtorvastatin CalciumLipitor
How Atorvastatin Calcium interacts with Sunflower E 400 IU — 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 + Atorvastatin Calcium interactionAtropine, Chlorpheniramine, Hyoscyamine, Phenylephrine, Phenylpropanolamine, ScopolamineAtrohist Plus, Pro Tuss, Ru-tuss, Stahist
How Atropine, Chlorpheniramine, Hyoscyamine, Phenylephrine, Phenylpropanolamine, Scopolamine interacts with Sunflower E 400 IU — 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 + Atropine, Chlorpheniramine, Hyoscyamine, Phenylephrine, Phenylpropanolamine, Scopolamine interactionAvacopanTavneos
How Avacopan interacts with Sunflower E 400 IU — 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 + Avacopan interactionAvanafilStendra
How Avanafil interacts with Sunflower E 400 IU — 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 + Avanafil interactionAvapritinibAyvakit
How Avapritinib interacts with Sunflower E 400 IU — 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 + Avapritinib interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Sunflower E 400 IU 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 Sunflower E 400 IU, from the product label.
VitalBulk
See all VitalBulk products- Name
- VitalBulk
- Street Address
- 440 Kings Village Rd.
- City
- Scotts Valley
- State
- CA
- ZipCode
- 95066
- Phone Number
- 855-885-2855
Sunflower E 400 IU by VitalBulk: Common Questions
Does Sunflower E 400 IU by VitalBulk interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Does this product actually work for vitamin E deficiency?
Is 400 IU a high dose?
What are the side effects?
Can I take this if I'm pregnant or breastfeeding?
Will this interact with my cholesterol medication?
Can I take this with my cancer treatment?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Sunflower E 400 IU 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 Sunflower E 400 IU’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Sunflower E 400 IU's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.
- 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
- 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
- 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
- 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.
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