The present invention encompasses an amino acid composition for stimulating muscle protein synthesis. Further, the present disclosure relates generally to the use of an anabolic amino acid composition for the stimulation of muscle protein synthesis. In particular, disclosed are compositions and methods of using the same for the prevention and/or treatment of a loss of any one of muscle mass, muscle strength, muscle function, and physical function, or any combination thereof, in a mammal, especially an adult mammal. Also provided are kits comprising a composition for the stimulation of muscle protein synthesis and, in certain embodiments, instructions for administration.
