Since 1947 Gluten, Wheat & Dairy Free Non-GMO Suitable for Vegans K-Parve Dietary SupplementCitrus Bioflavonoids comprise a group of water soluble plant pigments found in foods such as oranges and lemons, and are partly responsible for giving these foods their colorful look. They possess antioxidant properties that help fight cell-damaging free radicals in the body. This formulation offers natural, citrus bioflavonoids to promote and support optimal health.