L-ornithine is one of the amino acids. It is not contained in the normal proteins, however, it plays an important role inside our bodies. L-ornithine acts on the pituitary gland and promotes the secretion of growth hormone. This promotes the production of protein and improves muscles. It helps control the overweight by boosting the basal metabolism. Moreover, l-ornithine activates immune cells and strengthens the immune system. This product also contains l-carnitine l-tartrate, and l-arginine. This product is recommended for those who do sports or those who would like to control their weight.