Feverfew (concentrated)Discover Feverfew may help balance the bodys synthesis of prostaglandins that cause physical discomfort. Supports the central nervous system. Offers structural support for the body, particularly the joints. Promotes the natural balance of prostaglandin levels. How It Works How It Works Concentrated Feverfew delivers 500 mcg of parthenolides in a total of 186 mg of feverfew per capsule. Parthenolides are sesquiterpene lactones, the major dietary