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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.*
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Other Ingredients: stearic acid, hydroxypropyl cellulose, modified cellulose gum, and silica.
