Feverfew explained: what it is and where it grows
The NIH says feverfew is a perennial plant native to parts of western Asia and the Balkans that now grows worldwide. Its leaves contain parthenolide, which the NIH says is thought to be the main active ingredient. One product we reviewed lists feverfew, and no labels print its amount.
- What it is
- Plant
- In the products we reviewed
- 1, its label does not print the amount
What feverfew is
How much feverfew each product gives
Amount not printed: the dashed line shows the most it can be, the whole blend
Before you take it
If you take medicines
- Medicines, including those used for migraine
- Feverfew may interact with medicines, including those used for migraine.1
Side effects
- Feverfew can cause nausea, digestive problems, and bloating.1
- Chewing fresh feverfew leaves may cause mouth sores and irritation.1
- Applying feverfew to the skin may make the skin red, sore, or inflamed.1
- Stopping feverfew quickly can cause rebound headaches, and rare allergic reactions can include reactions involving chrysanthemums, daisies, and marigolds.2
Ask a doctor first
- Do not take feverfew during pregnancy because it may affect uterine contractions.1
- Some reviewers recommend avoiding feverfew while breastfeeding because safety data are lacking.2
- Stop feverfew at least 2 weeks before scheduled surgery because it may slow blood clotting.1
- People sensitive to ragweed and related plants may have allergic reactions to feverfew.1
These statements have not been evaluated by the FDA. A supplement is not a medicine.
The product we reviewed that lists feverfew
| Product | Form and serving | Feverfew per serving | Our score | Price a bottle | Buy |
|---|---|---|---|---|---|
 Steel Bite Pro#6 in oral health support | Capsules2 capsules | Not printedIn a 571 mg proprietary blend | 8.3 | $49 | Check price |
Questions people ask
What is the feverfew plant?
The NIH says feverfew is a perennial plant. It is native to parts of western Asia and the Balkans and now grows worldwide. European feverfew is different from American feverfew.
What are the side effects of feverfew?
Feverfew can cause nausea, digestive problems and bloating. Chewing fresh leaves may cause mouth sores and irritation, and applying feverfew to skin may make it red, sore or inflamed. Stopping feverfew quickly can cause rebound headaches, and rare allergic reactions can involve chrysanthemums, daisies and marigolds.
Is feverfew safe?
Feverfew should not be taken during pregnancy because it may affect uterine contractions. Ask a clinician before starting it if you are breastfeeding or sensitive to ragweed and related plants. Stop feverfew at least 2 weeks before scheduled surgery because it may slow blood clotting.
Does feverfew have interactions?
Yes, feverfew may have interactions. Ask a clinician before starting it.
Which supplements we reviewed contain feverfew?
Steel Bite Pro is the product we reviewed that lists feverfew. Its label places feverfew inside a 571 mg proprietary blend but does not print a separate amount. A serving is 2 capsules.
Sources
The products, amounts and prices come from each product's label and checkout, as its review shows them. AI drafts our pages from listed sources, figures are checked against them, and we have not tried the products.
- 1NIH National Center for Complementary and Integrative Health, Feverfewnccih.nih.gov/healthchecked
- 2NIH LactMed, Feverfewncbi.nlm.nih.gov/bookschecked