Feverfew extract is standardized to 0.7% parthenolide.
Parthenolide is the herbs key active which has been clinically studied.
Dosage: Take 1 capsule daily, preferably with food. Best results obtained with continuous use.
Supplement Facts
Other Ingredients: Gelatin (capsule)
Caution: Not recommended for use by pregnant or lactating women, or by children under two years of age. Certain individuals may experience oral or gastric irritation with use. If irritation occurs discontinue use immediately.