One 10g serving of BCAA Instant contains 5 g of BCAA amino acids in the optimal ratio of 2: 1: 1 and 3.5 g of L-Glutamine. BCAA amino acids constitute approximately 35% of the essential amino acids that build muscle protein and nearly 50% of the amino acids that must be supplied with food. Most of the glutamine is synthesized in skeletal muscles and accounts for over 60% of all amino acids that build human muscles.