What does l- arginine with l -citrulline do?

Swiss chemist Ernst Schultze first isolated Arginine from a lupin seedling in 1886. In 1932, it was discovered... ･ L-arginine increases nitric oxide (NO) levels, controlling blood vessel tone and flexibility.

L-Arginine is an amino acid and also a natural occurring chemical in our body. It plays important role in cell division and also helps to rid out wastes from our body. The amino acid L-arginine is found in nuts and sunflower seeds. Fish, chicken and dairy products also contain L-arginine. Best of all, it's also found in chocolate!

L-Citruline is a natural occurring amino acid found in food some food like watermelon and in the body.

Having both L-Arginine and L-Citruline in our body last about 24-36 hrs. L-Arginine itself will last only 2-3 hrs. -Dr. Joeseph Prendergrast