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Feverfew

Supplement botanical general nutrition
Aka: Tanacetum parthenium
Brands seen in Singapore: Swanson Vitamins, Nature's Way, NOW Foods, Vitacost, Oregon's Wild Harvest
Not medical advice. Check with your doctor or pharmacist before you start, stop or change the timing of anything you take.
How to use
What it’s for
Migraine prevention — mixed results in small studies
Pros & cons
Pros
  • Some research points to fewer migraine attacks
Cons
  • Results are mixed across small studies
  • Dose and plant source differ between studies
  • Ragweed sensitivity can mean an allergic reaction
Sources
  1. NIH NCCIH — Feverfew: Usefulness and Safety (last updated February 2025), 'How Much Do We Know?' and 'What Have We Learned?' · read 2026-08-27
    what it says
    “Some research suggests that feverfew may help prevent migraine headaches, but results have been mixed … The studies, which were small and used different sources and dosage levels of feverfew, showed inconsistent findings”
  2. NIH NCCIH — Feverfew: Usefulness and Safety, 'What Do We Know About Safety?' · read 2026-08-27
    what it says
    “People who are sensitive to ragweed and related plants may have allergic reactions to feverfew … Feverfew may slow blood clotting … Feverfew may interact with some medicines, including those used for migraine … Do not take feverfew while pregnant”
  3. HSA — Guidelines on health supplements (Singapore), maximum daily limits Tables 4–5 · read 2026-08-27
    what it says
    “Table 4: Vitamins Limits … Nutrient Maximum Daily Limit … Table 5: Minerals Limits”
  4. HSA — Guidelines on prohibited and restricted ingredients in health supplements and traditional medicines (Oct 2025), Annex A/B · read 2026-08-27
    what it says
    “The objective of this guideline is to highlight the substances of concern when used in HS and TM and is not meant to be an exhaustive list.”
  5. iHerb Singapore — Feverfew: Leaf Extract Capsules for Head Comfort category page (default best-selling order) · read 2026-08-27
    what it says
    “Feverfew: Leaf Extract Capsules for Head Comfort”
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Updated 2026-08-29. Every line above traces to a numbered source. Kozen-X is not a medical device and does not give medical advice. It lists what published sources have written down — nothing more. A pair not listed is unrecorded, not cleared. Before you start, stop or re-time anything, talk to your doctor or pharmacist.