Cell Advance™ 440 is an advanced antioxidant formula for cats and dogs which provides 23 powerful antioxidants/free radical scavengers at levels designed to work with any program. Cell Advance 440 includes free radical scavengers vitamins A, C, E and B6 to support the immune system and protect against free radical damage. Vitamin B6 is provided in two forms: one in an active form for amino acid metabolism and one in a form appropriate for animals with reduced B6 levels. Coenzyme Q10 is a necessary co-factor for ATP production and immune system support. The inclusion of enteric coated amino acids l-cysteine, l-lysine, methionine and l-glutathione support antibody production, cellular respiration and antioxidant activity. They are also precursors to amino acids and enzymes that the body uses to get rid of peroxides. Minerals like magnesium, manganese, copper and zinc support normal detoxification processes and enzyme production and utilization, while the inclusion of the enzyme catalase supports cellular respiration and deactivates hydrogen peroxide. SOD, or Super Oxide Dismutase, is another enzyme that rids the body of free radicals. The minerals in the formula assist in utilization of SOD. Cell Advance 440 also includes bioflavonoids like quercetin, rutin and hesperidin to support vascular and connective tissue health, maintain healthy collagen levels and protect cell structures from free radical damage.