Source Naturals, L-Arginine, Free Form, 1,000 mg, 100 Tablets

Dietary SupplementPromotes Increased Circulation 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 a precursor for nitric oxide, which promotes increased circulation by relaxing blood vessels. Each tablet provides 1,000 mg for convenient dosage.