Life Extension, L-Arginine, 700 mg, 200 vcapsProduct Description L arginine is a semi essential amino acid involved in numerous areas of human biochemistry that contribute to overall health. It modulates immune function, detoxifies ammonia for removal from the body and serves as a precursor for nitric oxide. Nitric oxide is a potent vasodilator, and supplemental L arginine can therefore support already healthy blood pressure levels. Higher intake of arginine is also linked to lower levels of C