The JST Peptido 4 in 1 protein supplement will help you supply your body with the sufficient amount of proteins to support lean mass, muscle growth & repair. It contains whey isolate, which is the purest form of protein available, & hydrolysed whey that offers high levels of peptides & amino acids: all this due to the fact that the body absorbs peptides much faster than whole proteins. The addition of peptide bonded glutamine supports recovery.