Arginine is a dibasic amino acid which, because it is hydrophilic, is usually found on the outside of globular proteins. Arginine is a precursor in the formation of nitric oxide, creatine, polyamines, L-glutamate, L-proline, agmatin (a possible neurotransmitter in the brain) and the arginine-containing tetra peptide tuftsin, believed to be an immunomodulator. L-arginine is a glycogenic amino acid; it can be converted to D-glucose and glycogen if needed by the body or it can be catabolised to produce biological energy. Supplemental L-arginine may have anti-atherogenic, anti-osteoporotic, cardiovascular, anti-ulcer, antioxidant and immunomodulatory actions. It may also have wound-repair activity. Our L-Arginine is flavoured with fructose to improve patient compliance and is catalyzed with the T J Clark phytogenic mineral catalyst for superior bioavailability.