Cell Advance 880 is a supplement for dogs that supports the immune system at the cellular level and protects the cell structure from free radical damage. It contains 23 powerful antioxidants, also known as free radical scavengers. Vitamins A, C, E, and B6 support the immune system and protect against unwanted free radical damage. Coenzyme Q10 is necessary for ATP production and immune system support. ATP is really important for the body: it helps with breathing and maintaining your heartbeat. ATP also helps to synthesize fats and helps nerve impulses move certain molecules into or out of cells. Cell Advance 880 also contains amino acids like l-cysteine, l-lysine, methionine, and l-glutathione, which support antibody production, cellular respiration, and antioxidant activity. It also contains minerals like magnesium, manganese, copper, and zinc, which support normal detoxification and enzyme production and utilization. There is also SOD, or Super Oxide Dismutase, an enzyme that rids the body of free radicals. Cell Advance 880 also includes bioflavonoids like quercetin, rutin, and hesperidin to support vascular and connective tissue health while maintaining healthy collagen levels. Bioflavonoids are plant-derived compounds found in certain fruits, vegetables, and other foods, which have a powerful antioxidant power.