L-Arginine:HCl is widely used in the medical and health supplement industries due to its role in nitric oxide production, which supports blood flow and cardiovascular health. It is commonly included in dietary supplements aimed at improving exercise performance, enhancing muscle growth, and reducing recovery time after physical activity. In clinical settings, it is utilized to treat conditions like hypertension, angina, and erectile dysfunction by promoting vasodilation. Additionally, it is incorporated into wound healing formulations, immune-boosting products, and skin care items to aid in protein synthesis, collagen production, cell repair, and support the body’s defense mechanisms. Its application extends to infant nutrition, where it is added to formulas to support growth and development.