Arginine is an amino acid that enhances muscle synthesis and recovery. Arginine is an effective growth hormone releaser and a precursor to nitric oxide (NO) synthesis. The potential benefits of an increased GH level include reduction in body fat, improved healing and recovery, and increased muscle mass. The potential benefits of increased NO levels include increased circulation to working muscles, increased nutrient uptake and protein synthesis, and improved male erectile performance.

Alpha Ketoglutarate (AKG) combines with ammonia generated by intense muscle activity to create glutamine, an amino acid important for energy fuel and muscle recovery.

Arginine is a nonessential amino acid that influences several metabolic factors that are important to athletes. Arginine was most famous for its role in stimulating the release of human GH (somatotropin).