L-Arginine (500 mg)

What the brand says

Amino acids are organic compounds that make up the "building blocks" of protein. They are necessary for the body to product hair, skin, blood and more. L-arginine is one of the most important amino acids and it plays a major role in supporting the immune system and promoting muscle growth. Each capsule of Vitabase L-Arginine contains 500 mg of L-arginine. We also include vitamin B-6 in our formula because it plays a major role in metabolizing amino acids.