Quercetin is one of the most well-known, non-citrus bioflavonoids. Bioflavonoids are intended to provide antioxidant activity and nutritive support to help maintain normal capillary permeability.* The human body cannot manufacture bioflavonoids and therefore must receive its supply through supplementation or diet. Directions: As a dietary supplement, take 1 capsule twice daily with a meal or glass of water. Serving Size: 1 Capsule 90 Servings per container