Feverfew Extract 500 mg
by Swanson Superior Herbs · capsule · 60 capsules
- On the market (NIH)
- UPC 0 87614 14267 8
- DSLD label 176445
- Serving 1 capsule
Feverfew Extract 500 mg by Swanson Superior Herbs lists one ingredient: 500 mg of feverfew extract per serving of 1 capsule. Its current label entered the NIH Dietary Supplement Label Database on April 25, 2018.
What is in Feverfew Extract 500 mg?
Each row as the label prints it, per serving of 1 capsule. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Feverfew extractas ParthenolidesFeverfew extract (Form: standardized to minimum 0.5% Parthenolides) PlantPart: leaf Genus: Tanacetum Species: parthenium | 500 mg | Higher than 81% of 162 products listing feverfew (median 200 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 176445 (entered April 25, 2018), version 9.4.0. See the label on DSLD. Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.
Is that a lot?
Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.
The NIH database records one serving a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.
The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.
Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.
Which products have the closest formulas?
6 products list the very same ingredients; the nearest amounts come first.
- Herbal Actives Feverfew 500 MG/0.7% Parthenolide Extended ReleaseNature's Plus same ingredients
- FeverfewMaine Coast Herbals · off the market same ingredients
- Feverfew Alcohol-FreeNature's Answer same ingredients
- FeverfewVillage Vitality same ingredients
- Feverfew ExtractEarthborn Elements same ingredients
- Feverfew 455 mgSolaray same ingredients
Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.
What does the label say about taking it?
Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.
- Directions
- Suggested Use: As a dietary supplement, take one capsule per day with water.
- Warnings
- Do not use if seal is broken.
- Keep out of reach of children.
- Warning: Do not take this product if you are pregnant or nursing.
- Discontinue use if you experience oral discomfort or skin irritation.
- Storage
- Store in a cool, dry place.
Source: label statements in DSLD label 176445.
What else is on the label?
Other ingredients: Gelatin, Maltodextrin, Rice Flour, Calcium Palmitate.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Guaranteed purity & potency.
How many labels does Feverfew Extract 500 mg have?
One label is on file, entered on April 25, 2018.
- Label 176445 (current) Entered April 25, 2018 · on the market · 60 capsules · UPC 0 87614 14267 8
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Swanson Health Products (distributor), Fargo, ND. All Swanson Superior Herbs products.