Feverfew Alcohol Free Ingredients & Drug Interactions
by Herbal Terra
What is this page for?
First and foremost: checking Feverfew Alcohol Free 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
Feverfew Alcohol Free is a dietary supplement by Herbal Terra with 1 active ingredient. Its ingredients are commonly taken for migraine prevention, headache, fever (traditional).Based on those ingredients, 929 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Feverfew Herb Extract, Dry. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Feverfew Alcohol Free by Herbal Terra
Ask about any prescription or over-the-counter medication and we check it for interactions with Feverfew Alcohol Free by Herbal Terra — 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 Feverfew Alcohol Free by Herbal Terra
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: Feverfew Herb Extract, Dry. Feverfew is traditionally used for migraine prevention and to ease tension-type headaches, though evidence for its effectiveness is limited.
The product also contains glycerin and water as inactive ingredients.
Does it work?
Couldn't assess
The evidence for feverfew and tension headaches is insufficient to rate it reliably, so we can't say whether it actually works for that purpose based on the data we hold. Same goes for its use in prurigo nodularis, psoriasis, and rheumatoid arthritis—the evidence just isn't established enough for us to say either way.
If you're considering this for a specific condition, talk with your pharmacist or doctor about what the science shows.
How safe is it?
Well-documented data
Feverfew is generally well tolerated over the short term, though it can trigger allergic reactions and mouth irritation in some people. Most common side effects are gastrointestinal: heartburn, nausea, diarrhea, bloating, constipation, abdominal pain, and flatulence.
Chewing fresh leaves is rougher on your mouth than commercial products; this liquid form should be gentler. One important note: if you stop taking feverfew after long-term use, some people report "post-feverfew syndrome"—anxiety, headaches, and insomnia—so talk to your pharmacist about how to wind down safely if you've been taking it regularly.
Meds to double-check
Moderate interaction found
Double-check this product before starting if you take blood thinners or antiplatelet drugs (like warfarin or clopidogrel)—feverfew may increase bleeding risk. Also verify any medications processed by liver enzymes CYP3A4, CYP2C9, CYP2C19, CYP2D6, CYP1A2, or CYP2C8, as feverfew may raise their levels.
Use the medication checker on this page to be sure.
The bottom line
Scorecard at a glanceFully disclosed formula with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.
Feverfew Alcohol Free is one to double-check before you start, especially if you take blood thinners, heart drugs, blood pressure medications, or antidepressants. The interaction risk is based on lab findings, not yet reported in people, but real enough to warrant a conversation with your pharmacist.
Ask us before adding it to your routine.
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 Jan 23, 2025.
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 Feverfew Alcohol Free, straight from the product label.
| Brand | Herbal Terra |
|---|---|
| Barcode (UPC) | 7386005132926 |
| Net contents | 2 Fluid Ounce(s); 60 Milliliter(s) |
| Market status | On market |
| Date entered into DSLD | Jan 23, 2025 |
| DSLD ID | 324182 |
| Product type | Botanical |
| Supplement form | Liquid |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years), Gluten Free, Sugar Free |
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.
Supplement Facts
The label details for Feverfew Alcohol Free by Herbal Terra, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Feverfew Herb Extract, Dry | 1156 mg | -- |
Other ingredients: Glycerin, Water
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.
Suggested/Recommended/Usage/Directions
Shake well before use. Adults take up to 30 drops (1 mL, one full squeeze of the dropper bulb) in 3-4 fl. oz. of juice or water up to 4 times a day.
Precautions
We recommend to seek expert medical advice before taking. May have contraindications and cause adverse reaction.
Consult a physician before giving to children under 18, before using during pregnancy, if nursing, or if you are on any medications.
Consult a physician before giving to children under 18, before using during pregnancy, if nursing, or if you are on any medications. Keep out of the reach of children!
Do not use if you are allergic to any ingredients.
Storage
Store in a cool, dry, dark place.
FDA Disclaimer Statement
This product has not been evaluated by the FDA and is not intended to diagnose, treat, cure or prevent any disease.
Formulation
cGMP Made in compliance with cGMP 21 CFR 111 in an FDA registered and inspected facility.
Sugar free
Expertly extracted 100% natural Premium product
No alcohol (ethyl), artificial ingredients, color additives, fillers or binders.
Natural Gluten free
Formula
Tanacetum parthenium
FDA Statement of Identity
Herbal Supplement
Seals/Symbols
Made in USA
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Feverfew Alcohol Free by Herbal Terra 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 Feverfew Alcohol Free by Herbal Terra
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size1 mL Dosage formLiquid Servings per container60 Amounts shown are per serving.
Feverfew Herb Extract, Dry
Interacts with929 drugs
Feverfew is a daisy-family herb best known for migraine prevention, where some studies suggest it may modestly lower how often migraines occur, though...
Feverfew Herb Extract, Dry monograph & interactionsOther (inactive) ingredients: Glycerin, Water. These complete the product’s ingredient list but are not active constituents.
Feverfew Alcohol Free by Herbal Terra Drug Interactions
HelloPharmacist Interaction Report
Feverfew Alcohol Free by Herbal Terra can interact with a number of medications because feverfew may inhibit several liver enzymes that break down drugs.
The most serious documented concern is with blood thinners and antiplatelet drugs (drugs that prevent clots). Feverfew may thin your blood further and raise bleeding risk—lab work suggests it inhibits platelet clotting, and one case report described vaginal bleeding in someone taking high-dose feverfew alongside anticoagulant therapy.
Read the full breakdown — every affected drug type, severity by severity
Feverfew may also slow how your liver clears drugs processed by six different enzyme systems: CYP3A4, CYP2C9, CYP2C19, CYP2D6, CYP1A2, and CYP2C8. This could raise levels of medications that depend on these pathways—including many heart drugs, blood pressure drugs, antidepressants, and allergy medications.
So far, these interactions haven't been reported in people, but the lab evidence is there and the risk is real enough to check before you start.
Altogether, these interactions span 917 individual medications. Before adding this product, run your exact medications through the checker on this page or ask us at the counter.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Feverfew Alcohol Free?
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 Feverfew Alcohol Free interact with 929 drugs. Click any drug to see the details.
1 of the 1 ingredient in Feverfew Alcohol Free interact with drugs. Each result below shows which ingredient is responsible. Feverfew Herb Extract, Dry
Acetaminophen, OxycodonePercocet, Roxicet, Tylox, Xartemis XR
How Acetaminophen, Oxycodone interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP1A2.
Read the full Feverfew Herb Extract, Dry + Acetaminophen, Oxycodone interactionAcetaminophen, Pamabrom, PyrilamineMidol Max Strength PMS, Pamprin, Pamprin ES
How Acetaminophen, Pamabrom, Pyrilamine interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP1A2.
Read the full Feverfew Herb Extract, Dry + Acetaminophen, Pamabrom, Pyrilamine interactionAcetaminophen, PentazocineTalacen
How Acetaminophen, Pentazocine interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP1A2.
Read the full Feverfew Herb Extract, Dry + Acetaminophen, Pentazocine interactionAcetaminophen, Phenylephrine, ChlorpheniramineSuper Cold Tabs
How Acetaminophen, Phenylephrine, Chlorpheniramine interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP1A2.
Read the full Feverfew Herb Extract, Dry + Acetaminophen, Phenylephrine, Chlorpheniramine interactionAcetaminophen, PhenylpropanolamineTetra Caps
How Acetaminophen, Phenylpropanolamine interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP1A2.
Read the full Feverfew Herb Extract, Dry + Acetaminophen, Phenylpropanolamine interactionAcetaminophen, Phenylpropanolamine, PhenyltoloxamineSinubid
How Acetaminophen, Phenylpropanolamine, Phenyltoloxamine interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP1A2.
Read the full Feverfew Herb Extract, Dry + Acetaminophen, Phenylpropanolamine, Phenyltoloxamine interactionAcetaminophen, PhenyltoloxaminePercogesic, Relagesic
How Acetaminophen, Phenyltoloxamine interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP1A2.
Read the full Feverfew Herb Extract, Dry + Acetaminophen, Phenyltoloxamine interactionAcetaminophen, Phenyltoloxamine, SalicylamideLobac
How Acetaminophen, Phenyltoloxamine, Salicylamide interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP1A2.
Read the full Feverfew Herb Extract, Dry + Acetaminophen, Phenyltoloxamine, Salicylamide interactionAcetaminophen, PropoxypheneDarvocet-N 100, Darvocet-N 50, E-Lor, Wygesic
How Acetaminophen, Propoxyphene interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP1A2.
Read the full Feverfew Herb Extract, Dry + Acetaminophen, Propoxyphene interactionAcetaminophen, PseudoephedrineChildren's Tylenol Sinus, Dristan N.D., Non-Aspirin Sinus, Ornex, Ornex-Max, Sinutab +5 more
How Acetaminophen, Pseudoephedrine interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP1A2.
Read the full Feverfew Herb Extract, Dry + Acetaminophen, Pseudoephedrine interactionAcetaminophen, Pseudoephedrine, TriprolidineActifed Plus ES
How Acetaminophen, Pseudoephedrine, Triprolidine interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP1A2.
Read the full Feverfew Herb Extract, Dry + Acetaminophen, Pseudoephedrine, Triprolidine interactionAcetylsalicylic AcidEntrophen
How Acetylsalicylic Acid interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, feverfew might have additive effects and increase the risk of bleeding when used with anticoagulant or antiplatelet drugs.
Read the full Feverfew Herb Extract, Dry + Acetylsalicylic Acid interactionAdagrasibKrazati
How Adagrasib interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP3A4.
Read the full Feverfew Herb Extract, Dry + Adagrasib interactionAerosphere Budesonide, Formoterol Fumarate, GlycopyrrolateBreztri
How Aerosphere Budesonide, Formoterol Fumarate, Glycopyrrolate interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 2c19 (cyp2c19) Substrates, Cytochrome P450 2c9 (cyp2c9) Substrates +1 Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP2C19.
Read the full Feverfew Herb Extract, Dry + Aerosphere Budesonide, Formoterol Fumarate, Glycopyrrolate interactionAgomelatineValdoxan
How Agomelatine interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 2c19 (cyp2c19) Substrates +1 Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP1A2.
Read the full Feverfew Herb Extract, Dry + Agomelatine interactionAlfentanilAlfenta
How Alfentanil interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP3A4.
Read the full Feverfew Herb Extract, Dry + Alfentanil interactionAlfuzosinUroxatral
How Alfuzosin interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP3A4.
Read the full Feverfew Herb Extract, Dry + Alfuzosin interactionAliskirenTekturna
How Aliskiren interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP3A4.
Read the full Feverfew Herb Extract, Dry + Aliskiren interactionAlmotriptanAlmogran, Axert
How Almotriptan interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP3A4.
Read the full Feverfew Herb Extract, Dry + Almotriptan interactionAlogliptinNesina
How Alogliptin interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 2c8 (cyp2c8) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP3A4.
Read the full Feverfew Herb Extract, Dry + Alogliptin interactionAlogliptin, PioglitazoneOseni
How Alogliptin, Pioglitazone interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 2c8 (cyp2c8) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP2C8.
Read the full Feverfew Herb Extract, Dry + Alogliptin, Pioglitazone interactionAlpelisibPiqray
How Alpelisib interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP3A4.
Read the full Feverfew Herb Extract, Dry + Alpelisib interactionAlprazolamNiravam, Xanax
How Alprazolam interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP3A4.
Read the full Feverfew Herb Extract, Dry + Alprazolam interactionAlteplase, TpaActilyse, Activase
How Alteplase, Tpa interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, feverfew might have additive effects and increase the risk of bleeding when used with anticoagulant or antiplatelet drugs.
Read the full Feverfew Herb Extract, Dry + Alteplase, Tpa interactionAluminum Hydroxide, Aspirin, Codeine Phosphate, Magnesium HydroxideAscriptin Codeine #2
How Aluminum Hydroxide, Aspirin, Codeine Phosphate, Magnesium Hydroxide interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryAnticoagulant/antiplatelet Drugs, Cytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, feverfew might have additive effects and increase the risk of bleeding when used with anticoagulant or antiplatelet drugs.
Read the full Feverfew Herb Extract, Dry + Aluminum Hydroxide, Aspirin, Codeine Phosphate, Magnesium Hydroxide interactionAluminum Hydroxide, Aspirin, Magnesium HydroxideAscriptin
How Aluminum Hydroxide, Aspirin, Magnesium Hydroxide interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, feverfew might have additive effects and increase the risk of bleeding when used with anticoagulant or antiplatelet drugs.
Read the full Feverfew Herb Extract, Dry + Aluminum Hydroxide, Aspirin, Magnesium Hydroxide interactionAmbrisentanLetairis, Volibris
How Ambrisentan interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP3A4.
Read the full Feverfew Herb Extract, Dry + Ambrisentan interactionAmiodaroneCordarone, Pacerone
How Amiodarone interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 2c8 (cyp2c8) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP2C8.
Read the full Feverfew Herb Extract, Dry + Amiodarone interactionAmitriptylineElavil
How Amitriptyline interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 2c9 (cyp2c9) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates +3 Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP2C9.
Read the full Feverfew Herb Extract, Dry + Amitriptyline interactionAmitriptyline, ChlordiazepoxideLimbitrol DS
How Amitriptyline, Chlordiazepoxide interacts with Feverfew Alcohol Free — through 1 ingredient. Tap an ingredient for the detail:
Feverfew Herb Extract, DryCytochrome P450 2c19 (cyp2c19) Substrates, Cytochrome P450 2d6 (cyp2d6) Substrates +3 Moderate
Interaction Summary
Theoretically, feverfew might increase levels of drugs metabolized by CYP2C19.
Read the full Feverfew Herb Extract, Dry + Amitriptyline, Chlordiazepoxide interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Feverfew Alcohol Free 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.
Feverfew Herb Extract, Dry
Anticoagulant/Antiplatelet Drugs
Theoretically, feverfew might have additive effects and increase the risk of bleeding when used with anticoagulant or antiplatelet drugs.
Laboratory research suggests that feverfew may inhibit platelet aggregation. Additionally, in one case report, a 36-year-old patient taking feverfew 2400 mg daily for 3 months experienced vaginal bleeding and a prolonged menstrual cycle, with a modest increase in partial thromboplastin time (PTT) and prothrombin time (PT).
Cytochrome P450 1A2 (Cyp1A2) Substrates
Theoretically, feverfew might increase levels of drugs metabolized by CYP1A2.
Laboratory research shows that feverfew might inhibit CYP1A2. So far, this interaction has not been reported in humans.
Cytochrome P450 2C19 (Cyp2C19) Substrates
Theoretically, feverfew might increase levels of drugs metabolized by CYP2C19.
Laboratory research shows that feverfew might inhibit CYP2C19. So far, this interaction has not been reported in humans.
Cytochrome P450 2C8 (Cyp2C8) Substrates
Theoretically, feverfew might increase levels of drugs metabolized by CYP2C8.
Laboratory research shows that feverfew might inhibit CYP2C8. So far, this interaction has not been reported in humans.
Cytochrome P450 2C9 (Cyp2C9) Substrates
Theoretically, feverfew might increase levels of drugs metabolized by CYP2C9.
Laboratory research shows that feverfew might inhibit CYP2C9. So far, this interaction has not been reported in humans.
Cytochrome P450 2D6 (Cyp2D6) Substrates
Theoretically, feverfew might increase levels of drugs metabolized by CYP2D6.
Laboratory research shows that feverfew might inhibit CYP2D6. So far, this interaction has not been reported in humans.
Cytochrome P450 3A4 (Cyp3A4) Substrates
Theoretically, feverfew might increase levels of drugs metabolized by CYP3A4.
Laboratory research shows that feverfew might inhibit CYP3A4. So far, this interaction has not been reported in humans.
Brand information
Manufacturer and brand details for Feverfew Alcohol Free, from the product label.
Herbal Terra
See all Herbal Terra products- Name
- Herbal Terra LLC
- Phone Number
- +18083857868
- Web Address
- herbalterra.com
Feverfew Alcohol Free by Herbal Terra: Common Questions
Does Feverfew Alcohol Free by Herbal Terra interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
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What side effects should I watch for?
Does this actually work for headaches?
Why is this alcohol-free?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Feverfew Alcohol Free 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 Feverfew Alcohol Free’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Feverfew Alcohol Free'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 18 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.
Feverfew 18 references
- McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
- Awang DVC. Prescribing therapeutic feverfew (Tancetum pathrnium (L.) Schultz Bip., syn. Chrysanthemumparthenium (L.) Bernh). Int Med 1998;1:11-3.
- Heptinstall S, Groenewegen WA, Spangenberg P, Loesche W. Extracts of feverfew may inhibit platelet behaviour via neutralization of sulphydryl groups. J Pharm Pharmacol 1987;39:459-65. PubMed
- Heptinstall S, White A, Williamson L, Mitchell JR. Extracts of feverfew inhibit granule secretion in blood platelets and polymorphonuclear leucocytes. Lancet 1985;1:1071-4. PubMed
- Makheja AN, Bailey JM. A platelet phospholipase inhibitor from the medicinal herb feverfew (Tanacetum parthenium). Prostaglandins Leukot Med 1982;8:653-60.
- Groenewegen WA, Heptinstall S. A comparison of the effects of an extract of feverfew and parthenolide, a component of feverfew, on human platelet activity in-vitro. J Pharm Pharmacol 1990;42:553-7. PubMed
- Heptinstall S, Groenewegen WA, Spangenberg P, Losche W. Inhibition of platelet behaviour by feverfew: a mechanism of action involving sulphydryl groups. Folia Haematol Int Mag Klin Morphol Blutforsch 1988;115:447-9.
- Biggs MJ, Johnson ES, Persaud NP, Ratcliffe DM. Platelet aggregation in patients using feverfew for migraine. Lancet 1982;2:776. PubMed
- Lamminpaa A, Estlander T, Jolanki R, Kanerva L. Occupational allergic contact dermatitis caused by decorative plants. Contact Dermatitis 1996;34:330-5. PubMed
- Johnson ES, Kadam NP, Hylands DM, Hylands PJ. Efficacy of feverfew as prophylactic treatment of migraine. Br Med J (Clin Res Ed) 1985;291:569-73. PubMed
- Pittler MH, Ernst E. Feverfew for preventing migraine. Cochrane Database Syst Rev 2004;(1):CD002286. PubMed
- Ernst E, Pittler MH. The efficacy and safety of feverfew (Tanacetum parthenium L.): an update of a systematic review. Public Health Nutr 2000;3:509-14.
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