Source Naturals L-Arginine 1000 mg 50 tablet-OUT OF STOCK
$5.88
L-Arginine is a crystalline free-form amino acid. It is an important factor in muscle metabolism and works to transport, store, and excrete nitrogen. It is also a precursor of guanidine-phosphate, phosphoarginine, and creatine, which are high-energy compounds found in muscles.