Feverfew Leaves 180 caps from Nature\'s Way

Feverfew Leaves Helps Maintain Normal Blood Vessel Tone Guaranteed Natural Potency 600 Mcg Marthenolide Per Day Feverfew (tanacetum parthenium) studies at the London migraine clinic have increased interest in the Parthenolide in Feverfew. Feverfew helps maintain normal blood vessel tone.* Parthenolide also helps normalize the function of platelets in the blood system by inhibiting platelet aggregation, reducing serotonin release from platelets and blocking the formation of pro-inflammatory mediators.* Nature\'s Way uses only Feverfew leaves harvested at their peak of potency - (0.2%) Parthenolide. Supplement Facts Serving Size: 1 Capsule Amount Per Serving Feverfew (Leaf) 380 mg.