Grape Seed Oil 500 mg Ingredients & Drug Interactions
by Swanson EFAs
What is this page for?
First and foremost: checking Grape Seed Oil 500 mg 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
Grape Seed Oil 500 mg is a dietary supplement by Swanson EFAs with 1 active ingredient. Its ingredients are commonly taken for antioxidant support, heart and circulation health, vein problems (such as varicose veins).Based on those ingredients, 978 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Grape seed Oil. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Grape Seed Oil 500 mg by Swanson EFAs
Ask about any prescription or over-the-counter medication and we check it for interactions with Grape Seed Oil 500 mg by Swanson EFAs — 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
Ask the Pharmacist
A licensed pharmacist will answer your question by email — free, usually within 24 hours.
Got it — thank you!
A licensed pharmacist will answer within 24 hours. Keep an eye on your email (worth checking spam, just in case).
HelloPharmacist Scorecard of Grape Seed Oil 500 mg by Swanson EFAs
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 4 active ingredients: oleic acid, linoleic acid, stearic acid, and palmitic acid — all fatty acids that make up grape seed oil. The inactive ingredients are gelatin, rice bran oil, and D-alpha-tocopheryl acetate (a form of vitamin E used as a preservative).
Does it work?
Moderate evidence
Oleic acid is rated possibly effective for high cholesterol (hypercholesterolemia) and possibly effective for heart disease (coronary heart disease). The evidence we hold doesn't establish effectiveness ratings for the other ingredients in this product.
How safe is it?
Some data gaps
Oleic acid is generally recognized as safe when you get it from food sources like olive oil. However, the safety data for concentrated supplements is thin, especially in pregnancy and lactation — food amounts are fine, but we don't have solid evidence on supplement-level doses in these situations.
No adverse effects are documented in our data. If you're pregnant or breastfeeding, talk with your doctor or pharmacist about whether this product is right for you.
Meds to double-check
Moderate interaction found
Check your antidiabetes drugs (blood sugar medications) before taking this product — oleic acid may increase their effects and lower your blood glucose further than intended. We could not check the interaction data for stearic acid, linoleic acid, or palmitic acid, so confirm those with your pharmacist as well.
The bottom line
Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and some safety-information gaps remain.
Grape Seed Oil 500 mg may be worth considering if you're looking to support cholesterol or heart health, based on oleic acid's possibly effective rating. If you take any diabetes medication, check your specific drugs with the tool on this page first — oleic acid might enhance their effect.
Talk it over with your doctor or pharmacist before you start, especially if you're pregnant, breastfeeding, or on blood sugar medication.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 1 of 4 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Feb 25, 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 Grape Seed Oil 500 mg, straight from the product label.
| Brand | Swanson EFAs |
|---|---|
| Barcode (UPC) | 087614170589 |
| Net contents | 60 Liquid Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Feb 25, 2019 |
| DSLD ID | 184627 |
| Product type | Fat/fatty Acid |
| Supplement form | Capsule |
| Dietary claims / uses | Nutrient, All Other |
| Intended target group(s) | Adult (18 - 50 Years) |
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 Grape Seed Oil 500 mg by Swanson EFAs, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Stearic Acid | 15 mg | -- |
| Linoleic Acid | 300 mg | -- |
| Oleic Acid | 60 mg | -- |
| Palmitic Acid | 30 mg | -- |
| Grape seed Oil | 500 mg | -- |
Other ingredients: Gelatin, Rice Bran Oil, D-Alpha-Tocopheryl Acetate
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.
General Statements
Superior Essential Fatty Acids
To reorder, call toll free 1-800-437-4148 or visit our website at www.swansonvitamins.com
Formula
A source of Omega-6 & -9 EFAs
FDA Statement of Identity
Dietary Supplement
Seals/Symbols
Guaranteed purity & potency
Precautions
Do not use if seal is broken.
Keep out of reach of children.
Storage
Store in a cool, dry place.
Suggested/Recommended/Usage/Directions
Suggested use: As a dietary supplement, take one liquid capsule two times per day with food and water.
General
SWE058 Rev 0 05 24 17
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Grape Seed Oil 500 mg by Swanson EFAs 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 Grape Seed Oil 500 mg by Swanson EFAs
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size1 Liquid Capsule(s) Dosage formCapsule Amounts shown are per serving.
Grape seed Oil
Interacts with910 drugs
Grapes and grape products like grape seed extract contain antioxidant compounds such as resveratrol and proanthocyanidins that may support heart and b...
Grape seed Oil monograph & interactions- › Stearic Acid
- › Linoleic Acid
- › Oleic Acid
- › Palmitic Acid
Other (inactive) ingredients: Gelatin, Rice Bran Oil, D-Alpha-Tocopheryl Acetate. These complete the product’s ingredient list but are not active constituents.
Grape Seed Oil 500 mg by Swanson EFAs Drug Interactions
HelloPharmacist Interaction Report
Swanson EFAs Grape Seed Oil 500 mg contains oleic acid, which may interact with antidiabetes drugs (blood sugar medications).
The most serious documented interaction is Moderate in severity: oleic acid may increase the effects of antidiabetes drugs, potentially lowering blood sugar further than expected. Research in people with type 2 diabetes shows that diets rich in oleic acid from olive oil can decrease fasting blood glucose levels compared to diets high in other oils.
Read the full breakdown — every affected drug type, severity by severity
Altogether, these interactions span 86 individual medications. We could not check three other ingredients in this product — stearic acid, linoleic acid, and palmitic acid — because we hold no interaction data for them.
If you take any antidiabetes medication, run your exact drugs through the checker on this page before starting this supplement.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Grape Seed Oil 500 mg?
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 Grape Seed Oil 500 mg interact with 978 drugs. Click any drug to see the details.
1 of the 1 ingredient in Grape Seed Oil 500 mg interact with drugs. Each result below shows which ingredient is responsible. Grape seed Oil
Ado-trastuzumab EmtansineKadcyla
How Ado-trastuzumab Emtansine interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
It is unclear if grape seed extract inhibits or induces CYP3A4; research is conflicting.
Read the full Grape Seed Oil + Ado-trastuzumab Emtansine interactionAbciximabReoPro
How Abciximab interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, grape extracts may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Grape Seed Oil + Abciximab interactionAbemaciclibVerzenio
How Abemaciclib interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
It is unclear if grape seed extract inhibits or induces CYP3A4; research is conflicting.
Read the full Grape Seed Oil + Abemaciclib interactionAbiraterone
How Abiraterone interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
It is unclear if grape seed extract inhibits or induces CYP3A4; research is conflicting.
Read the full Grape Seed Oil + Abiraterone interactionAbiraterone AcetateYonsa, Zytiga
How Abiraterone Acetate interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
It is unclear if grape seed extract inhibits or induces CYP3A4; research is conflicting.
Read the full Grape Seed Oil + Abiraterone Acetate interactionAbrocitinibCibinqo
How Abrocitinib interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 2c9 (cyp2c9) Substrates, Anticoagulant/antiplatelet Drugs Moderate
Interaction Summary
It is unclear if grape juice or grape seed extract inhibits CYP2C9; research is conflicting.
Read the full Grape Seed Oil + Abrocitinib interactionAcalabrutinibCalquence
How Acalabrutinib interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
It is unclear if grape seed extract inhibits or induces CYP3A4; research is conflicting.
Read the full Grape Seed Oil + Acalabrutinib interactionAcarboseGlucobay, Prandase, Precose
How Acarbose interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Oleic AcidAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, oleic acid might increase the effects of antidiabetes drugs.
Read the full Oleic Acid + Acarbose interactionAcenocoumarolSintrom
How Acenocoumarol interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, grape extracts may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Grape Seed Oil + Acenocoumarol interactionAcetaminophenChildren's Tylenol, Children's Tylenol Meltaways, Tylenol, Tylenol Ex Strength
How Acetaminophen interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 2e1 (cyp2e1) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, grape seed extract might increase the levels of CYP2E1 substrates.
Read the full Grape Seed Oil + Acetaminophen interactionAcetaminophen, AspirinGemnisyn
How Acetaminophen, Aspirin interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 1a2 (cyp1a2) Substrates, Anticoagulant/antiplatelet Drugs +1 Moderate
Interaction Summary
Theoretically, grape juice might reduce the levels of CYP1A2 substrates.
Read the full Grape Seed Oil + Acetaminophen, Aspirin interactionAcetaminophen, Aspirin, CaffeineExcedrin, Excedrin Extra Strength, Excedrin Migraine
How Acetaminophen, Aspirin, Caffeine interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilAnticoagulant/antiplatelet Drugs, Cytochrome P450 2e1 (cyp2e1) Substrates +2 Moderate
Interaction Summary
Theoretically, grape extracts may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Grape Seed Oil + Acetaminophen, Aspirin, Caffeine interactionAcetaminophen, Brompheniramine, PhenylpropanolamineDimetapp Cold and Flu
How Acetaminophen, Brompheniramine, Phenylpropanolamine interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 2e1 (cyp2e1) Substrates Moderate
Interaction Summary
Theoretically, grape juice might reduce the levels of CYP1A2 substrates.
Read the full Grape Seed Oil + Acetaminophen, Brompheniramine, Phenylpropanolamine interactionAcetaminophen, ButalbitalAxocet, Bancap, Bucet, Butex Forte, Esgic CF, Orbivan CF +5 more
How Acetaminophen, Butalbital interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 2e1 (cyp2e1) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, grape seed extract might increase the levels of CYP2E1 substrates.
Read the full Grape Seed Oil + Acetaminophen, Butalbital interactionAcetaminophen, Butalbital, CaffeineEsgic, Esgic Plus, Fiogesic, Fioricet, Repan, Tecnal +1 more
How Acetaminophen, Butalbital, Caffeine interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 2e1 (cyp2e1) Substrates +1 Moderate
Interaction Summary
Theoretically, grape juice might reduce the levels of CYP1A2 substrates.
Read the full Grape Seed Oil + Acetaminophen, Butalbital, Caffeine interactionAcetaminophen, Butalbital, Caffeine, CodeineEsgic with Codeine, Fioricet w/ Codeine
How Acetaminophen, Butalbital, Caffeine, Codeine interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 2d6 (cyp2d6) Substrates +2 Moderate
Interaction Summary
It is unclear if grape seed extract inhibits or induces CYP3A4; research is conflicting.
Read the full Grape Seed Oil + Acetaminophen, Butalbital, Caffeine, Codeine interactionAcetaminophen, Butalbital, CodeineBancap w/ Codeine
How Acetaminophen, Butalbital, Codeine interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 2d6 (cyp2d6) Substrates +1 Moderate
Interaction Summary
Theoretically, grape juice might reduce the levels of CYP1A2 substrates.
Read the full Grape Seed Oil + Acetaminophen, Butalbital, Codeine interactionAcetaminophen, Butalbital, Codeine PhosphatePhrenilin #3
How Acetaminophen, Butalbital, Codeine Phosphate interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 2e1 (cyp2e1) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, grape seed extract might increase the levels of CYP2E1 substrates.
Read the full Grape Seed Oil + Acetaminophen, Butalbital, Codeine Phosphate interactionAcetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound
How Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +2 Moderate
Interaction Summary
It is unclear if grape seed extract inhibits or induces CYP3A4; research is conflicting.
Read the full Grape Seed Oil + Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interactionAcetaminophen, Caffeine, CodeineGesic C15, Gesic C30, Gesic C8, Lenoltec 1, Lenoltec 2, Lenoltec 3 +1 more
How Acetaminophen, Caffeine, Codeine interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 2e1 (cyp2e1) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +2 Moderate
Interaction Summary
Theoretically, grape seed extract might increase the levels of CYP2E1 substrates.
Read the full Grape Seed Oil + Acetaminophen, Caffeine, Codeine interactionAcetaminophen, Caffeine, Codeine, SalicylamideCodalan No.1, Codalan No.2, Codalan No.3
How Acetaminophen, Caffeine, Codeine, Salicylamide interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 2d6 (cyp2d6) Substrates +2 Moderate
Interaction Summary
It is unclear if grape seed extract inhibits or induces CYP3A4; research is conflicting.
Read the full Grape Seed Oil + Acetaminophen, Caffeine, Codeine, Salicylamide interactionAcetaminophen, Caffeine, DihydrocodeineDHC Plus, Panlor DC, Panlor SS
How Acetaminophen, Caffeine, Dihydrocodeine interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 2e1 (cyp2e1) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates +2 Moderate
Interaction Summary
Theoretically, grape seed extract might increase the levels of CYP2E1 substrates.
Read the full Grape Seed Oil + Acetaminophen, Caffeine, Dihydrocodeine interactionAcetaminophen, Caffeine, IsomethepteneMigralam
How Acetaminophen, Caffeine, Isometheptene interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 2e1 (cyp2e1) Substrates +1 Moderate
Interaction Summary
Theoretically, grape juice might reduce the levels of CYP1A2 substrates.
Read the full Grape Seed Oil + Acetaminophen, Caffeine, Isometheptene interactionAcetaminophen, Caffeine, PyrilamineMidol Max Strength Menstrual
How Acetaminophen, Caffeine, Pyrilamine interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
It is unclear if grape seed extract inhibits or induces CYP3A4; research is conflicting.
Read the full Grape Seed Oil + Acetaminophen, Caffeine, Pyrilamine interactionAcetaminophen, Chlorpheniramine Maleate, Dextromethorphan HbrVicks Formula 44M Cough, Cold & Flu Relief
How Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 2e1 (cyp2e1) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates +2 Moderate
Interaction Summary
Theoretically, grape seed extract might increase the levels of CYP2E1 substrates.
Read the full Grape Seed Oil + Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interactionAcetaminophen, Chlorpheniramine, Codeine, PhenylephrineColrex
How Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 2e1 (cyp2e1) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates +2 Moderate
Interaction Summary
Theoretically, grape seed extract might increase the levels of CYP2E1 substrates.
Read the full Grape Seed Oil + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, DextromethorphanCoricidin II Extra Strength Cold and Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 2e1 (cyp2e1) Substrates +2 Moderate
Interaction Summary
Theoretically, grape juice might reduce the levels of CYP1A2 substrates.
Read the full Grape Seed Oil + Acetaminophen, Chlorpheniramine, Dextromethorphan interactionAcetaminophen, Chlorpheniramine, Dextromethorphan HydrobromideCoricidin HBP Maximum Strength Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 2e1 (cyp2e1) Substrates +2 Moderate
Interaction Summary
It is unclear if grape seed extract inhibits or induces CYP3A4; research is conflicting.
Read the full Grape Seed Oil + Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PhenylpropanolamineMulti Symptom Cold Relief
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 2e1 (cyp2e1) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +2 Moderate
Interaction Summary
Theoretically, grape seed extract might increase the levels of CYP2E1 substrates.
Read the full Grape Seed Oil + Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PseudoephedrineChildren's Tylenol Cold Plus Cough, Tylenol Cold Ex Strength
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interacts with Grape Seed Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed OilCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +2 Moderate
Interaction Summary
It is unclear if grape seed extract inhibits or induces CYP3A4; research is conflicting.
Read the full Grape Seed Oil + Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Grape Seed Oil 500 mg 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.
Grape seed Oil
Anticoagulant/Antiplatelet Drugs
Theoretically, grape extracts may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
In vitro evidence suggests that grape extracts might decrease platelet aggregation.
Cyclosporine (Neoral, Sandimmune)
Ingesting grape juice with cyclosporine can reduce cyclosporine absorption.
A small pharmacokinetic study in healthy young adults shows that intake of purple grape juice 200 mL along with cyclosporine can decrease the absorption of cyclosporine by up to 30% when compared with water. Separate doses of grape juice and cyclosporine by at least 2 hours to avoid this interaction.
Cytochrome P450 1A2 (Cyp1A2) Substrates
Theoretically, grape juice might reduce the levels of CYP1A2 substrates.
A small pharmacokinetic study in healthy adults shows that ingestion of 200 mL of grape juice decreases phenacetin plasma levels. This is thought to be due to induction of CYP1A2.
Cytochrome P450 2D6 (Cyp2D6) Substrates
Theoretically, grape seed extract may increase the levels of CYP2D6 substrates.
In vitro evidence suggests that grape seed extract might inhibit CYP2D6 enzymes. However, this interaction has not been reported in humans.
Cytochrome P450 2E1 (Cyp2E1) Substrates
Theoretically, grape seed extract might increase the levels of CYP2E1 substrates.
In vitro and animal research suggests that grape seed proanthocyanidin extract inhibits CYP2E1 enzymes. However, this interaction has not been reported in humans.
Cytochrome P450 3A4 (Cyp3A4) Substrates
It is unclear if grape seed extract inhibits or induces CYP3A4; research is conflicting.
In vitro evidence suggests that grape seed extract might inhibit CYP3A4 enzymes. However, evidence from animal research shows that grape seed extract may induce CYP3A4 in the liver. So far, these interactions have not been reported in humans.
Midazolam (Versed)
Theoretically, long-term intake of grape seed extract might decrease the effects of midazolam.
Animal research shows that subchronic ingestions of grape seed extract can increase the elimination of intravenous midazolam by increasing hepatic CYP3A4 activity. Single doses of grape seed extract do not appear to affect midazolam elimination.
Phenacetin
Grape juice might decrease phenacetin absorption.
A small pharmacokinetic study in healthy adults shows that ingestion of 200 mL of grape juice decreases phenacetin plasma levels. This is thought to be due to induction of cytochrome P450 1A2 (CYP1A2).
Cytochrome P450 2C9 (Cyp2C9) Substrates
It is unclear if grape juice or grape seed extract inhibits CYP2C9; research is conflicting.
In vitro evidence shows that grape seed extract or grape juice might inhibit CYP2C9 enzymes. However, a small pharmacokinetic study in healthy adults shows that drinking 8 ounces of grape juice once does not affect the clearance of flurbiprofen, a probe-drug for CYP2C9 metabolism. The effects of continued grape juice consumption are unclear.
Brand information
Manufacturer and brand details for Grape Seed Oil 500 mg, from the product label.
Swanson EFAs
See all Swanson EFAs products- Name
- Swanson Health Products
- City
- Fargo
- State
- ND
- ZipCode
- 58104
- Phone Number
- 1-800-437-4148
- Web Address
- www.swansonvitamins.com
Grape Seed Oil 500 mg by Swanson EFAs: Common Questions
Does Grape Seed Oil 500 mg by Swanson EFAs interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Will this help my cholesterol or heart health?
Is this safe if I'm pregnant or breastfeeding?
Can I take this with my diabetes medication?
What are these fatty acids, and what do they do?
Does this product have fillers or other ingredients?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Grape Seed Oil 500 mg 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 Grape Seed Oil 500 mg’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Grape
Interacts with 910 drugsGrapes and grape products like grape seed extract contain antioxidant compounds such as resveratrol and proanthocyanidins that may support heart and blood vessel health. While the food is he...
Read the full Grape monograph → Herb & supplement monographOleic Acid
Interacts with 86 drugsOleic acid is a heart-healthy monounsaturated fat found mainly in olive oil, canola oil, avocados, and nuts. As part of a Mediterranean-style diet, it is widely viewed as a healthier replace...
Read the full Oleic Acid monograph →Sources & How We Checked
Grape Seed Oil 500 mg'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 53 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.
Oleic Acid 19 references
- Madigan C, Ryan M, Owens D, et al. Dietary unsaturated fatty acids in type 2 diabetes: higher levels of postprandial lipoprotein on a linoleic acid-rich sunflower oil diet compared with an oleic acid-rich olive oil diet. Diabetes Care 2000;23:1472-7. PubMed
- Gillingham, L. G., Gustafson, J. A., Han, S. Y., Jassal, D. S., and Jones, P. J. High-oleic rapeseed (canola) and flaxseed oils modulate serum lipids and inflammatory biomarkers in hypercholesterolaemic subjects. Br J Nutr 2011;105(3):417-427. PubMed
- Jones PJ, Senanayake VK, Pu S, Jenkins DJ, Connelly PW, Lamarche B, Couture P, Charest A, Baril-Gravel L, West SG, Liu X, Fleming JA, McCrea CE, Kris-Etherton PM. DHA-enriched high-oleic acid canola oil improves lipid profile and lowers predicted cardiova
- Cater, N. B., Heller, H. J., and Denke, M. A. Comparison of the effects of medium-chain triacylglycerols, palm oil, and high oleic acid sunflower oil on plasma triacylglycerol fatty acids and lipid and lipoprotein concentrations in humans. Am.J Clin.Nutr PubMed
- Mozaffarian D, Clarke R. Quantitative effects on cardiovascular risk factors and coronary heart disease risk of replacing partially hydrogenated vegetable oils with other fats and oils. Eur J Clin Nutr. 2009;63(Suppl 2):S22-33. PubMed
- Cao Y, Hou L, Wang W. Dietary total fat and fatty acids intake, serum fatty acids and risk of breast cancer: A meta-analysis of prospective cohort studies. Int J Cancer. 2016;138(8):1894-904. doi: 10.1002/ijc.29938. PubMed
- FDA completes review of qualified health claim petition for oleic acid and the risk of coronary heart disease. November 2018. Available at: www.fda.gov/Food/NewsEvents/ConstituentUpdates/ucm624758.htm. Accessed January 25, 2019.
- Liu X, Kris-Etherton PM, West SG, et al. Effects of canola and high-oleic-acid canola oils on abdominal fat mass in individuals with central obesity. Obesity. 2016;24(11):2261-2268. PubMed
- Bowen KJ, Kris-Etherton PM, West SG, et al. Diets enriched with conventional or high-oleic acid canola oils lower atherogenic lipids and lipoproteins compared to a diet with a western fatty acid profile in adults with central adiposity. J Nutr. 2019;149(3 PubMed
- Steffen BT, Duprez D, Szklo M, Guan W, Tsai MY. Circulating oleic acid levels are related to greater risks of cardiovascular events and all-cause mortality: The Multi-Ethnic Study of Atherosclerosis. J Clin Lipidol. 2018;12(6):1404-1412. PubMed
- Banim PJ, Luben R, Khaw KT, Hart AR. Dietary oleic acid is inversely associated with pancreatic cancer - Data from food diaries in a cohort study. Pancreatology. 2018;18(6):655-660. PubMed
- Morin SJ, Gaziano JM, Djoussé L. Relation between plasma phospholipid oleic acid and risk of heart failure. Eur J Nutr. 2018;57(8):2937-2942. PubMed
- Samieri C, Féart C, Proust-Lima C, et al. Olive oil consumption, plasma oleic acid, and stroke incidence: the Three-City Study. Neurology. 2011;77(5):418-25. PubMed
- Compher CW, Kinosian BP, Rubesin SE, Ratcliffe SJ, Metz DC. Energy absorption is reduced with oleic acid supplements in human short bowel syndrome. JPEN J Parenter Enteral Nutr. 2009;33(1):102-8. PubMed
- Ben Fradj MK, Ouanes Y, Hadj-Taieb S, et al. Decreased oleic acid and marine n?-?3 polyunsaturated fatty acids in Tunisian patients with urothelial bladder cancer. Nutr Cancer. 2018;70(7):1043-1050.
- de Silva PS, Luben R, Shrestha SS, Khaw KT, Hart AR. Dietary arachidonic and oleic acid intake in ulcerative colitis etiology: a prospective cohort study using 7-day food diaries. Eur J Gastroenterol Hepatol. 2014;26(1):11-8. PubMed
- Higashi K, Shige H, Ito T, et al. Effect of a low-fat diet enriched with oleic acid on postprandial lipemia in patients with type 2 diabetes mellitus. Lipids. 2001;36(1):1-6. PubMed
- Lin HC, van Citters GW, Heimer F, Bonorris G. Slowing of gastrointestinal transit by oleic acid: a preliminary report of a novel, nutrient-based treatment in humans. Dig Dis Sci. 2001;46(2):223-9. PubMed
- Li D, Tong Y, Li Y. Associations between dietary oleic acid and linoleic acid and depressive symptoms in perimenopausal women: The Study of Women's Health Across the Nation. Nutrition. 2020 Mar;71:110602. PubMed
Grape 34 references
- Kiesewetter H, Koscielny J, Kalus U, et al. Efficacy of orally administered extract of red vine leaf AS 195 (folia vitis viniferae) in chronic venous insufficiency (stages I-II). A randomized, double-blind, placebo-controlled trial. Arzneimittelforschung
- Xiao Dong S, Zhi Ping Z, Zhong Xiao W, et al. Possible enhancement of the first-pass metabolism of phenacetin by ingestion of grape juice in Chinese subjects. Br J Clin Pharmacol 1999;48:638-40. PubMed
- Vaswani SK, Hamilton RG, Carey RN, et al. Anaphylaxis recurrent urticaria and angioedema from grape hypersensitivity. J Allergy Clin Immunol 1998;101:S31.
- Chevallier A. The Encyclopedia of Medicinal Plants. London, UK: Dorling Kindersley, Ltd., 1996.
- Bernstein DI, Bernstein CK, Deng C, et al. Evaluation of the clinical efficacy and safety of grapeseed extract in the treatment of fall seasonal allergic rhinitis: a pilot study. Ann Allergy Asthma Immunol 2002;88:272-8.. PubMed
- Greenblatt DJ, von Moltke LL, Perloff ES, et al. Interaction of flurbiprofen with cranberry juice, grape juice, tea, and fluconazole: in vitro and clinical studies. Clin Pharmacol Ther 2006;79:125-33. PubMed
- Ward NC, Hodgson JM, Croft KD, et al. The combination of vitamin C and grape-seed polyphenols increases blood pressure: a randomized, double-blind, placebo-controlled trial. J Hypertens 2005;23:427-34.. PubMed
- Ray, S. D., Parikh, H., Hickey, E., Bagchi, M., and Bagchi, D. Differential effects of IH636 grape seed proanthocyanidin extract and a DNA repair modulator 4-aminobenzamide on liver microsomal cytochrome 4502E1-dependent aniline hydroxylation. Mol Cell B PubMed
- O'Byrne, D. J., Devaraj, S., Grundy, S. M., and Jialal, I. Comparison of the antioxidant effects of Concord grape juice flavonoids alpha-tocopherol on markers of oxidative stress in healthy adults. Am J Clin.Nutr. 2002;76(6):1367-1374.
- Schaefer, E., Peil, H., Ambrosetti, L., and Petrini, O. Oedema protective properties of the red vine leaf extract AS 195 (Folia vitis viniferae) in the treatment of chronic venous insufficiency. A 6-week observational clinical trial. Arzneimittelforschun PubMed
- Nishikawa, M., Ariyoshi, N., Kotani, A., Ishii, I., Nakamura, H., Nakasa, H., Ida, M., Nakamura, H., Kimura, N., Kimura, M., Hasegawa, A., Kusu, F., Ohmori, S., Nakazawa, K., and Kitada, M. Effects of continuous ingestion of green tea or grape seed extra
- de Lange, D. W., Scholman, W. L., Kraaijenhagen, R. J., Akkerman, J. W., and van de Wiel, A. Alcohol and polyphenolic grape extract inhibit platelet adhesion in flowing blood. Eur.J Clin.Invest 2004;34(12):818-824. PubMed
- Samet, J. M. and Coultas, D. B. Reduced forced vital capacity in California grape workers. What does it mean? Am Rev.Respir.Dis 1992;145(2 Pt 1):255-256. PubMed
- Gamsky, T. E., McCurdy, S. A., Samuels, S. J., and Schenker, M. B. Reduced FVC among California grape workers. Am Rev.Respir.Dis 1992;145(2 Pt 1):257-262. PubMed
- de Lange, D. W., Verhoef, S., Gorter, G., Kraaijenhagen, R. J., van de Wiel, A., and Akkerman, J. W. Polyphenolic grape extract inhibits platelet activation through PECAM-1: an explanation for the French paradox. Alcohol Clin.Exp.Res 2007;31(8):1308-1314 PubMed
- Etheridge, A. S., Black, S. R., Patel, P. R., So, J., and Mathews, J. M. An in vitro evaluation of cytochrome P450 inhibition and P-glycoprotein interaction with goldenseal, Ginkgo biloba, grape seed, milk thistle, and ginseng extracts and their constitu
- Krikorian, R., Nash, T. A., Shidler, M. D., Shukitt-Hale, B., and Joseph, J. A. Concord grape juice supplementation improves memory function in older adults with mild cognitive impairment. Br J Nutr. 2010;103(5):730-734. PubMed
- Ingersoll, G. L., Wasilewski, A., Haller, M., Pandya, K., Bennett, J., He, H., Hoffmire, C., and Berry, C. Effect of concord grape juice on chemotherapy-induced nausea and vomiting: results of a pilot study. Oncol.Nurs.Forum 2010;37(2):213-221. PubMed
- Oliveira-Freitas, V. L., Dalla, Costa T., Manfro, R. C., Cruz, L. B., and Schwartsmann, G. Influence of purple grape juice in cyclosporine bioavailability. J Ren Nutr. 2010;20(5):309-313. PubMed
- Hollis, J. H., Houchins, J. A., Blumberg, J. B., and Mattes, R. D. Effects of concord grape juice on appetite, diet, body weight, lipid profile, and antioxidant status of adults. J Am Coll.Nutr. 2009;28(5):574-582. PubMed
- Dohadwala, M. M., Hamburg, N. M., Holbrook, M., Kim, B. H., Duess, M. A., Levit, A., Titas, M., Chung, W. B., Vincent, F. B., Caiano, T. L., Frame, A. A., Keaney, J. F., Jr., and Vita, J. A. Effects of Concord grape juice on ambulatory blood pressure in
- Rabe, E., Stucker, M., Esperester, A., Schafer, E., and Ottillinger, B. Efficacy and tolerability of a red-vine-leaf extract in patients suffering from chronic venous insufficiency--results of a double-blind placebo-controlled study. Eur.J Vasc.Endovasc. PubMed
- Trotta, M., Cesaretti, M., Conzi, R., Derchi, L. E., and Borgonovo, G. Elderly male with mesogastric pain. Small bowel obstruction caused by an intact fresh grape. Ann.Emerg.Med 2011;58(4):e1-e2. PubMed
- McCurdy, S. A., Wiggins, P., Schenker, M. B., Munn, S., Shaieb, A. M., Weinbaum, Z., Goldsmith, D., McGillis, S. T., Berman, B., and Samuels, S. Assessing dermatitis in epidemiologic studies: occupational skin disease among California grape and tomato ha
- Winter, C. K. and Kurtz, P. H. Factors influencing grape worker susceptibility to skin rashes. Bull.Environ.Contam Toxicol. 1985;35(3):418-426. PubMed
- Yamasaki, R., Dekio, S., and Jidoi, J. Contact dermatitis from grape bud. Contact Dermatitis 1985;12(4):226-227. PubMed
- Cox, J. and Grigg, M. Small bowel obstruction by an intact grape. J Am Geriatr.Soc 1986;34(7):550. PubMed
- Faircloth, D. E. and Robison, W. J. Obstruction of the sigmoid colon by grape seeds. JAMA 11-27-1981;246(21):2430. PubMed
- Marguerie, C. and Drouet, M. [Occupational eosinophilic lung in a grape grower: role of sulfites]. Allerg.Immunol.(Paris) 1995;27(5):163-167.
- Brito, FF., Martinez, A., Palacios, R., Mur, P., Gomez, E., Galindo, P. A., Borja, J., and Martinez, J. Rhinoconjunctivitis and asthma caused by vine pollen: a case report. J Allergy Clin Immunol 1999;103(2 Pt 1):262-266. PubMed
- Ras RT, Zock PL, Zebregs YE, et al. Effect of polyphenol-rich grape seed extract on ambulatory blood pressure in subjects with pre- and stage I hypertension. Br J Nutr 2013;110(12):2234-41. PubMed
- Berry AC, Nakshabendi R, Abidali H, et al. Adverse effects of grape seed extract supplement: A clinical case and long-term follow-up. J Diet Suppl. 2016;13(2):232-5. PubMed
- Martínez-Maqueda D, Zapatera B, Gallego-Narbón A, Vaquero MP, Saura-Calixto F, Pérez-Jiménez J. A 6-week supplementation with grape pomace to subjects at cardiometabolic risk ameliorates insulin sensitivity, without affecting other metabolic syndrome mark
- Moon SW, Shin YU, Cho H, Bae SH, Kim HK; and for the Mogen Study Group. Effect of grape seed proanthocyanidin extract on hard exudates in patients with non-proliferative diabetic retinopathy. Medicine (Baltimore) 2019;98(21):e15515. PubMed
Parts of this content are provided by the Therapeutic Research Center, LLC.
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.
© 2021 Therapeutic Research Center, LLC