Nature's Bounty L-Arginine, Amino Acid Supplement helps in improving blood circulation and vascular functioning. It is made with L-Arginine that supports better blood flow throughout the body, especially in heart arteries. It promotes vascular functions and supports heart health to the best. It ensures that the occurrence of heart diseases like angina, chest pain, and arterial clogging is reduced and an individual lives healthy life. It comes in a bottle of 50 tablets of 1000mg each to use as prescribed by your doctor.