L-Arginine

Name: L-Arginine

Classification: Vasodilator, Androgen Precursor

L-arginine acts as an Androgen Precursor because it is the precursor in the synthesis of polyamines [Mendez JD, Hernandez MP. Ginecol Obstet Mex 1993;61:229-34] and as a Vasodilator because it is the precursor to nitric oxide (NO) [Lewis SE, et al. Mol Hum Reprod 1996;2(11):873-8].

L-Arginine is a naturally occurring amino acid, one of the "Semi essential" amino acids that can open up blood vessels throughout the body. It forms nitric oxide, which dilates blood vessels, carrying oxygenated blood and nutrients to vital organs and tissues including the penis. L-Arginine is an amino acid that stimulates growth hormone release and enhances the reproductive system.

Anecdotal reports suggest that L-arginine supplements can improve fertility in men who have low sperm counts or poor sperm motility (activity). Durk Pearson and Sandy Shaw contend that L-arginine supplements can double sperm count. [Keller, 1975; Salvadorini, 1974].