L leucine is one of the key branched chain amino acids and has long been utilised by sporting professionals as part of their nutritional plans as an essential amino acid l leucine cannot be produced by the body and therefore must be obtained from the diet phd nutrition l leucine provides a high quality supplement in a convenient capsule format making it easy to maintain your daily intake nutrition container size 180 caps serving size 1 2 capsules servings per container 45 90 container