Now L-Ornithine Powder supports healthy protein metabolism. Ornithine is a non-essential amino acid that plays a central role in the urea cycle, functioning along with Arginine and Citrulline to rid the body of ammonia, a byproduct of protein metabolism. Ornithine is converted into Arginine, it can help to maintain healthy Arginine levels in the body. Ornithine can also be converted into other amino acids, such as citrulline, proline, and glutamate, as well as creatine, an important muscular energy source. This product is pure, and because no anti-caking agents are used, lumping may occur. This product contains hydrochloride, the acid normally present in the stomach, which acts to stabilize the L-ornithine. Recommended Use: Take 1/2 teaspoon 1 to 2 times daily, mixed with juice or water, on an empty stomach, or as directed by a healthcare professional. Store in a cool, dry, dark place after opening.