l-Arginine is one of the most metabolically versatile amino acids which was discovered by Hedin in 1895. By engaging in several metabolic pathways within the human body, it turns into nitric oxide and helps the body build protein. In addition to its role in the synthesis of nitric oxide, l-arginine serves as a precursor for the synthesis of polyamines, proline, glutamate, creatine, agmatine and urea. Such effects give L-arginine an array of potential benefits that range from regulating the risk of vascular and heart diseases and chest pain, building up muscle tone, accelerating wound healing, improving erectile dysfunction, safeguarding immune response and inhibiting gastric hyperacidity. The demonstrated anti-aging benefits of l-arginine show greater potential than any pharmaceutical or nutraceutical agent available in the market.