The Branched-Chain Amino Acids (BCAA"s) Leucine, Isoleucine and Valine are essential because our bodies canTMt manufacture them. They account for 35% of the essential amino acids in muscle proteins. Glutamine is the most abundant amino acid in the human blood. Glutamine may become conditionally essential in certain situations, including intensive physical training, when the body cannot meet its needs by synthesizing glutamine. These (conditionally) essential amino acids can be provided by dietary protein intake, including by food supplements. Our G-BCAA formula contains a 1:1:1:1 ratio of Glutamine, Leucine, Isoleucine and Valine! Directions Use 3 capsules 1-4 times a day. Best times to take: before/after training, before going to bed and between meals. Allergen info Manufactured in a facility that processes milk, soy and egg proteins, and gluten, peanuts! Size 250 capsules 83 servings