Leucoselect Grape Seed Extract 100 mg Antioxidant Dietary Supplement Vegetarian Gluten FreeBluebonnet"s Grape Seed Extract 100 mg Capsules are 100% natural and derived from champagne grape seeds imported from France. Leucoselect Grape Seed Extract is a standardized plant extract concentrated for oligomeric proanthocyanidins, monomeric polyphenols and flavonoids. Available in easy-to-swallow vegetable capsules for maximum assimilation and absorption.