ActiTide-CS is a kind of dipeptide composed of β-alanine and L-histidine, two amino acids, crystalline solid.Muscle and brain tissues contain high concentrations of carnosine.Carnosine is a kind of carnitine that was discovered together with the Russian chemist Gulevitch.Studies in the United Kingdom, South Korea, Russia and other countries have shown that carnosine has a strong antioxidant capacity and is beneficial to the human body.