Nature's Sunshine High-Parthenolide Feverfew delivers 500 mcg of parthenolide in a total of 291 mg of feverfew—from a specially grown “high parthenolide” feverfew leaf—per capsule. 

Feverfew, High-Parthenolide, commonly known as Bachelor’s Buttons, provides nutrition to the central nervous system.
 
This herb offers nutritional support for migraine headaches.
 
Parthenolides are sesquiterpene lactones, the major dietary components of feverfew.

Benefits of Nature's Sunshine Feverfew :

• Feverfew has traditionally been used to alleviate or lessen the severity of migraine headaches,
  and to reduce the intensity and duration of migraine headaches.
• Feverfew has also been used traditionally to help reduce fever.
• Feverfew has been reported to relieve menstrual discomforts in some cases.
• Supports the central nervous system.
• Offers structural support for the body, particularly the joints.
• Promotes the natural balance of prostaglandin and serotonin levels

Each capsule contains a guaranteed 500 mcg of parthenolide, one of a group of sesquiterpene lactones, the major dietary component of feverfew. Feverfew’s remarkable qualities are useful for the Structural System, especially the joints. Contains compounds that promote healthy blood vessel tone and relax smooth muscle tissue.*

With its higher concentration of the active ingredient, parthenolide, this product is more potent and effective in relieving migraines than regular feverfew. Three times the strength of Feverfew, each tablet is equal to 8 fresh feverfew leaves.
 
NOTE: Do not take feverfew during pregnancy and nursing.

Ingredients: 

Amount Per Capsule:  Feverfew Aerial Parts and Leaf Extract  (Tanacetum parthenium Chrysanthemum parthenium) 291 mg*