NutriBiotic Grapefruit Seed Extract delivers 250 mg of grapefruit seed extract in each capsule. Grapefruit Seed Extract is a natural compound derived from the seed and pulp of grapefruit.  NutriBiotic's capsules are easy to swallow and eliminate bitter or unpleasant taste. Contains no soy, milk, egg, yeast, corn, wheat, sweeteners or preservatives.