Grape Seed Extract 400 mg Ingredients & Drug Interactions
by Bronson
What is this page for?
First and foremost: checking Grape Seed Extract 400 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 Extract 400 mg is a dietary supplement by Bronson 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, 910 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Grape Seed Extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Grape Seed Extract 400 mg by Bronson
Ask about any prescription or over-the-counter medication and we check it for interactions with Grape Seed Extract 400 mg by Bronson — 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 Grape Seed Extract 400 mg by Bronson
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: grape seed extract at 400 mg per capsule. Grape seed extract is derived from grape seeds and contains compounds called proanthocyanidins, which are thought to be responsible for its effects on veins and other tissues.
The capsule also contains inactive ingredients (binders, fillers, and the capsule itself): modified cellulose, magnesium stearate, silicon dioxide, and microcrystalline cellulose.
Does it work?
Moderate evidence
Grape seed extract is possibly effective for chronic venous insufficiency (CVI) — a condition where veins in your legs have trouble returning blood to the heart, causing swelling and discomfort. The evidence suggests it may help, but it's not definitive.
For allergic rhinitis (hay fever), nausea from chemotherapy, and weight loss, the data shows it is possibly ineffective — meaning the evidence doesn't support benefit for these uses.
How safe is it?
Well-documented data
Grape seed extract is generally well tolerated in studies. The most common side effects are mild: abdominal pain, diarrhea, dry mouth, indigestion, headache, joint pain, and nausea.
A rare serious reaction — anaphylaxis (severe allergic reaction) to grape skin — has been reported, though this is uncommon. During pregnancy, concentrated grape supplements should be avoided due to limited safety data; whole grapes as food are fine.
While breastfeeding, there isn't enough information on concentrated grape supplements, so talk with your doctor or pharmacist for personalized guidance. The extract itself appears to be generally well tolerated, and isolated side effects like sore throat or joint pain occur at rates similar to placebo in studies.
Meds to double-check
Moderate interaction found
Check your medications against grape seed extract if you take blood thinners or antiplatelet drugs (like warfarin, aspirin, or clopidogrel) — there's a Moderate risk of increased bleeding. Also double-check if you're on cyclosporine, midazolam, or any drug metabolized by your liver's CYP1A2, CYP2D6, CYP2E1, or CYP3A4 enzymes — grape seed extract may change how well they work.
Use the search tool on this page to check your specific medications.
The bottom line
Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.
If you have chronic venous insufficiency and want a plant-based option, grape seed extract has some evidence behind it. Before you start, check with us or your doctor about blood thinners, antiplatelet drugs, cyclosporine, midazolam, or any medications your liver metabolizes — this product can affect how your body handles them.
If you're pregnant, breastfeeding, or taking any prescriptions, talk with your pharmacist first.
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 Aug 22, 2024.
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 Extract 400 mg, straight from the product label.
| Brand | Bronson |
|---|---|
| Barcode (UPC) | 716563113698 |
| Net contents | 90 Vegetarian Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Aug 22, 2024 |
| DSLD ID | 317319 |
| Product type | Botanical |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years), Women (not pregnant or lactating), Gluten 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 Grape Seed Extract 400 mg by Bronson, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Grape Seed Extract | 400 mg | -- |
Other ingredients: Modified Cellulose, Magnesium Stearate, Silicon Dioxide, Microcrystalline Cellulose
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.
Brand IP Statement(s)
Bronson Nutrition+ Since 1960
Formulation
Antioxidant and immune support
Non-GMO Gluten-free Soy-free
Lab Tested Made from High Quality Ingredients 365 days 100% money back guaranteed
Formula
Standardized to 95% proanthocyanidins
FDA Statement of Identity
Dietary Supplement
Suggested/Recommended/Usage/Directions
Directions: As a dietary supplement for adults, take 1 capsule daily, preferably with a meal, or as directed by a healthcare professional.
Precautions
Warning: Do not take this product if pregnant or nursing. Consult a healthcare professional before taking this product if you have a medical condition or are taking medication.
Discontinue use and consult a healthcare professional in case of adverse reaction. Do not use if seal under cap is broken or missing.
Keep out of reach of children.
Storage
Store at room temperature.
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.
Seals/Symbols
GMP Good Manufacturing Practice
General Statements
Nutrition questions or comments? [email protected] Call 1-800-235-3200 Mon. - Fri. 7 AM - 6 PM MST Sat. 8 AM - 4:30 PM MST
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Grape Seed Extract 400 mg by Bronson 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 Extract 400 mg by Bronson
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size1 Capsule(s) Dosage formCapsule Servings per container90 Amounts shown are per serving.
Grape Seed Extract
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 Extract monograph & interactionsOther (inactive) ingredients: Modified Cellulose, Magnesium Stearate, Silicon Dioxide, Microcrystalline Cellulose. These complete the product’s ingredient list but are not active constituents.
Grape Seed Extract 400 mg by Bronson Drug Interactions
HelloPharmacist Interaction Report
Bronson's Grape Seed Extract does interact with medications.
The ingredient grape seed extract affects how your body processes and responds to several drug types, and the most serious concern is with blood thinners and antiplatelet drugs (medications that prevent clots). Grape seed extract may increase bleeding risk if you're on these drugs — this is a Moderate severity issue, so it needs checking before you start.
Read the full breakdown — every affected drug type, severity by severity
Grape seed extract also affects how your liver breaks down other medications. It may change the levels of drugs metabolized by several liver enzymes (CYP1A2, CYP2D6, CYP2E1, and CYP3A4 substrates) — meaning some drugs could become less or more potent in your body.
Two drugs warrant particular mention: cyclosporine (an immunosuppressant) can lose up to 30% of its absorption if you take it with grape juice, so doses should be separated by at least 2 hours; and long-term use of grape seed extract may reduce the effects of midazolam (a sedative), though a single dose doesn't appear to cause the problem.
Additionally, the data on CYP3A4 is conflicting — we don't yet know if grape seed extract inhibits or induces it in humans, only that lab and animal work point both ways. Altogether, these interactions span 900 individual medications.
Use the medication checker on this page to search your exact drugs before you start.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Grape Seed Extract 400 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 Extract 400 mg interact with 910 drugs. Click any drug to see the details.
1 of the 1 ingredient in Grape Seed Extract 400 mg interact with drugs. Each result below shows which ingredient is responsible. Grape Seed Extract
Acetaminophen, Chlorpheniramine, PhenylephrineAlka-Seltzer PLUS, Histex SR, Protid
How Acetaminophen, Chlorpheniramine, Phenylephrine interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Chlorpheniramine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, Phenylephrine, SalicylamideRhinogesic, Rhinogesic JR
How Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Theoretically, grape juice might reduce the levels of CYP1A2 substrates.
Read the full Grape Seed Extract + Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interactionAcetaminophen, Chlorpheniramine, PhenylpropanolamineAlumadrine, Conex, Sinadrin Max Strength, Sinulin
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Chlorpheniramine, Phenylpropanolamine interactionAcetaminophen, Chlorpheniramine, Phenylpropanolamine, OpiumHista-Derfule
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interactionAcetaminophen, Chlorpheniramine, Phenylpropanolamine, PhenyltoloxamineNorel Plus
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interactionAcetaminophen, Chlorpheniramine, PseudoephedrineAlka-Seltzer PLUS Liquid Gels, Children's Tylenol Cold, Codimal, Comtrex, Extra Strength Tylenol Allergy Sinus, Lorsin +3 more
How Acetaminophen, Chlorpheniramine, Pseudoephedrine interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Chlorpheniramine, Pseudoephedrine interactionAcetaminophen, ChlorzoxazoneAcetazone Forte, Extra Strength Tylenol Aches & Strains, Parafon Forte
How Acetaminophen, Chlorzoxazone interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Chlorzoxazone interactionAcetaminophen, Chlorzoxazone, CodeineAcetazone Forte C8, Parafon Forte C8
How Acetaminophen, Chlorzoxazone, Codeine interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Chlorzoxazone, Codeine interactionAcetaminophen, CodeineTylenol No.3, Tylenol w/ Codeine
How Acetaminophen, Codeine interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Codeine interactionAcetaminophen, Codeine, DoxylamineMersyndol
How Acetaminophen, Codeine, Doxylamine interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Codeine, Doxylamine interactionAcetaminophen, Codeine, MethocarbamolAcetaminophen, Codeine, Methocarbamol, Robaxacet 8
How Acetaminophen, Codeine, Methocarbamol interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Codeine, Methocarbamol interactionAcetaminophen, Dexbrompheniramine, PseudoephedrineSinadrin Plus
How Acetaminophen, Dexbrompheniramine, Pseudoephedrine interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Dexbrompheniramine, Pseudoephedrine interactionAcetaminophen, DextromethorphanTylenol Cough Ex Strength
How Acetaminophen, Dextromethorphan interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Dextromethorphan interactionAcetaminophen, Dextromethorphan, Doxylamine, PseudoephedrineVicks NyQuil
How Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PhenylephrineConar-A
How Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PhenylpropanolamineAnatuss
How Acetaminophen, Dextromethorphan, Guaifenesin, Phenylpropanolamine interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylpropanolamine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PseudoephedrineRobitussin Cold, Severe Cold, Suphedrine Cold/Cough
How Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interactionAcetaminophen, Dextromethorphan, Phenylpropanolamine, PyrilamineTheracaps
How Acetaminophen, Dextromethorphan, Phenylpropanolamine, Pyrilamine interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Dextromethorphan, Phenylpropanolamine, Pyrilamine interactionAcetaminophen, Dextromethorphan, PseudoephedrineAlka-Seltzer PLUS Flu Liquid Gels, Non Aspirin Cold Caps, Tylenol Cold, Tylenol Flu Daytime Ex Strength, Tylenol Flu Ex Strength
How Acetaminophen, Dextromethorphan, Pseudoephedrine interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 2d6 (cyp2d6) Substrates +2 Moderate
Interaction Summary
Theoretically, grape juice might reduce the levels of CYP1A2 substrates.
Read the full Grape Seed Extract + Acetaminophen, Dextromethorphan, Pseudoephedrine interactionAcetaminophen, Dichloralantipyrine, IsomethepteneAmidrine, Midchlor, Migquin, Migratine
How Acetaminophen, Dichloralantipyrine, Isometheptene interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Dichloralantipyrine, Isometheptene interactionAcetaminophen, Dichloralphenazone, IsomethepteneMidrin
How Acetaminophen, Dichloralphenazone, Isometheptene interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Dichloralphenazone, Isometheptene interactionAcetaminophen, Dichlorophenazone, IsometheptaneIsocom
How Acetaminophen, Dichlorophenazone, Isometheptane interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Dichlorophenazone, Isometheptane interactionAcetaminophen, DiphenhydramineTylenol PM, Tylenol PM Ex Strength
How Acetaminophen, Diphenhydramine interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Diphenhydramine interactionAcetaminophen, Diphenhydramine, PseudoephedrineChildren's Tylenol Allergy, Cold Control, Contac Night Allergy Relief
How Acetaminophen, Diphenhydramine, Pseudoephedrine interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Diphenhydramine, Pseudoephedrine interactionAcetaminophen, Doxylamine, PseudoephedrineEx Strength Tylenol Sinus Nighttime
How Acetaminophen, Doxylamine, Pseudoephedrine interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Doxylamine, Pseudoephedrine interactionAcetaminophen, HydrocodoneAnexsia, Anodynos DHC, Azdone, Co-Gesic, Doucet, Lorcet +9 more
How Acetaminophen, Hydrocodone interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Hydrocodone interactionAcetaminophen, IbuprofenCombogesic
How Acetaminophen, Ibuprofen interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome P450 2c9 (cyp2c9) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +2 Moderate
Interaction Summary
It is unclear if grape juice or grape seed extract inhibits CYP2C9; research is conflicting.
Read the full Grape Seed Extract + Acetaminophen, Ibuprofen interactionAcetaminophen, MeperidineDemerol APAP
How Acetaminophen, Meperidine interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Meperidine interactionAcetaminophen, MethocarbamolRobaxacet
How Acetaminophen, Methocarbamol interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Methocarbamol interactionAcetaminophen, OrphenadrineOrfenagesic
How Acetaminophen, Orphenadrine interacts with Grape Seed Extract 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Grape Seed ExtractCytochrome 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 Extract + Acetaminophen, Orphenadrine interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Grape Seed Extract 400 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 Extract
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 Extract 400 mg, from the product label.
Bronson
- Name
- Bronson Laboratories
- Street Address
- 70 Commerce Drive
- City
- Hauppauge
- State
- NY
- ZipCode
- 11788
- Phone Number
- 1-800-235-3200
- Web Address
- BronsonVitamins.com
Grape Seed Extract 400 mg by Bronson: Common Questions
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The Full Monographs Behind Grape Seed Extract 400 mg’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Grape Seed Extract 400 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 34 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.
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