Feverfew
Feverfew suppliers and sourcing guide
Feverfew is Tanacetum parthenium (formerly Chrysanthemum parthenium), a short-lived perennial in the daisy family (Asteraceae) cultivated in Europe and North America. The leaves and flowering tops are dried and sold as powder or cut herb, or extracted with alcohol. Material is usually specified by its parthenolide content, a sesquiterpene lactone measured by HPLC.
- Category
- Botanicals and mushrooms
- Also known as
- Tanacetum parthenium · Chrysanthemum parthenium · feverfew herb · feverfew leaf
- Facts checked
- November 2026
Forms and grades of feverfew
Suppliers sell different products under the same name. Specify the one you need.
Dried leaf and herb powder
Dried, milled leaves and herb tops, often sold with a minimum parthenolide level.
Standardized extract
Alcohol extract with a declared parthenolide percentage by HPLC.
Cut herb
Dried aerial parts cut for teas and tinctures.
Organic
Herb from certified organic farms, with the certificate tied to the lot.
What to check on the COA
Compare each result with your own specification when the lot arrives.
- Identity (HPTLC)
- Fingerprint against Tanacetum parthenium reference material, to rule out look-alike chamomiles and tansy.
- Parthenolide assay (HPLC)
- Parthenolide as a percentage of dry weight by a named HPLC method.
- Heavy metals
- Lead, arsenic, cadmium and mercury by ICP-MS, checked against the buyer's limits and any Prop 65 exposure targets.
- Microbiology
- Total plate count, yeast and mold, E. coli and Salmonella (often Staphylococcus aureus too).
- Pesticide residues
- Multi-residue screen by GC-MS/MS and LC-MS/MS, required for organic claims and commonly requested for conventional material.
- Physical tests
- Loss on drying, mesh or particle size, bulk density, color and odor against the spec.
Storage, lots and expiry
Storage and shelf life
Keep herb and extract sealed in lined containers, cool, dry and dark. Parthenolide falls during storage, especially with heat, moisture and light, so limit time open. Suppliers set shelf life or retest dates and repeat the parthenolide assay at retest.
Lots and expiry dates
Parthenolide varies widely by chemotype, plant part and harvest, so check each lot against your spec. Record supplier lot, plant part and assay, and use oldest stock first.
Regulatory status
Facts from regulators and standards bodies, each linked to its source.
Health Canada's feverfew natural health product monograph lists Tanacetum parthenium with the dried herb top and leaf as source parts.
Source: webprod.hc-sc.gc.ca (opens in a new tab)That monograph includes preparations standardized to 0.2 to 2% parthenolide by dry weight.
Source: webprod.hc-sc.gc.ca (opens in a new tab)The EU Novel Food status Catalogue entry for Chrysanthemum parthenium (POL-NF-00247) concerns the aerial parts and lists them as not novel in food supplements.
Source: ec.europa.eu (opens in a new tab)
This is general information, not regulatory advice. Status differs by country and by how the ingredient is used, so check the rules for your product and market.
Feverfew suppliers
Manufacturers and distributors whose own websites say they sell it.
We are checking feverfew suppliers now
Every listing is checked against the supplier’s own website before it goes live, so this list fills in over the coming weeks. The specs and COA checklist above are ready today.
Sell feverfew? Request a listingFrequently asked questions
What forms of feverfew can brands buy?
Common forms include dried leaf and herb powder, standardized extract, cut herb and organic. Ask each supplier for the specification sheet of the exact grade they quote.
What should the COA for feverfew include?
Expect identity (HPTLC), parthenolide assay (HPLC), heavy metals, microbiology, pesticide residues and physical tests, each with its method, specification and result for that lot.
How should feverfew be stored?
Keep herb and extract sealed in lined containers, cool, dry and dark. Parthenolide falls during storage, especially with heat, moisture and light, so limit time open. Suppliers set shelf life or retest dates and repeat the parthenolide assay at retest.
What is the regulatory status of feverfew?
Health Canada's feverfew natural health product monograph lists Tanacetum parthenium with the dried herb top and leaf as source parts. That monograph includes preparations standardized to 0.2 to 2% parthenolide by dry weight. The EU Novel Food status Catalogue entry for Chrysanthemum parthenium (POL-NF-00247) concerns the aerial parts and lists them as not novel in food supplements.
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