Nutricost Feverfew supplement contains 380mg of high quality feverfew per capsule. The supplement is vegan friendly, non-GMO and gluten free. Nutricost, located and headquartered in the USA, only uses the best ingredients for maximum quality and to help you feel your best! By keeping our supplement recipes simple and clean, you get the best experience possible with Nutricost. Our supplements are manufactured in a GMP-compliant and FDA-registered facility; and each batch of every product is tested by independent, ISO-accredited laboratories.