Antioxidant Support 500 mg Per CapsuleDietary SupplementSupports Healthy Aging and Cell Rejuvenation Provides Protection Against Free Radical Damage Provides Antioxidant Support Science-Backed Quality Since 1969 Swanson Ultra L-Carnosine features Right Age® Carnosine an organic compound composed of the amino acids histidine and beta- alanine. It’s highly concentrated in important tissues like those of the brain the heart and the muscles. Carnosine supplements function as a broad-spectrum antioxidant and support the healthy functioning of enzyme systems.