Arginine is critical for protein synthesis, production of nitric oxide (fundamental for cardiovascular health), and proper function of the urea cycle.
Arginine is synthesized in the intestinal tract from Citrulline. It is the precursor for Ornithine and is a vital part of the urea cycle, being involved in the detoxification and elimination of ammonia. It is also important for Nitric Oxide production, (necessary for endothelial health and vasodilation), protein synthesis, wound healing, immune function and has a secretalogical effect on hormones. Eighty percent of seminal fluid is made of Arginine, and it plays a role in the reproductive system of females as well. It is also a precursor required to synthesize polyamines, which are required for growth and function of all healthy cells. Those with Herpes and similar viruses should take additional Lysine to maintain metabolic Lysine/Arginine balance. Since it competes for absorption with Lysine, the Lysine supplements should be administered approximately 1-½ hours after Arginine supplementation.