The amino acid L-arginine has several important functions in the human body. It produces nitric oxide, helps maintain low blood pressure, regulates blood flow, plays an important role in cell communication, strengthens the immune system, and fights harmful microorganisms. Amino acids are also the building blocks of proteins. L-arginine has long been popular among strength athletes and bodybuilders due to its performance-enhancing and muscle-pumping effects.
L-arginine is produced by the body itself, but not necessarily in the required quantities. Especially during periods of stress, certain illnesses, after injuries and surgeries, during strenuous physical labor or competitive sports, but also during growth or in advanced age, the body's need is often higher than the body's own production and intake through food. In these cases, taking L-arginine supplements is advisable.