Quercetin is a bright yellow polyphenol antioxidant that is found in most superfoods. Researchers argue that its the Quercetin that makes super foods super. Our Quercetin is sourced from Sophora japonica. EACH SERVE CONTAINS 475MG OF QUERCETIN How to use:Serving Size: 1 Capsule Consume 1 serve daily or as recommended by your health care provider. If you have a medical condition or are on any medication please consult with your primary care provider or prescribing physician before using this product.