SOURCE NATURALS - L-Ornithine Powder - 3.53 oz. (100 g)DESCRIPTION L Ornithine, a free form crystalline amino acid, is a precursor of arginine, which is necessary for the synthesis of creatine, an important energy provider for muscles. In addition, L Ornithine is a key compound in the urea cycle, one of the body's main processes for eliminating ammonia. DETAILS Package Description: 3. 53 oz (100 gm) Serving Size: 1 2 Teaspoon (approx. 1. 9 g) Number of Servings: 52 FACTS Serving Size: 1 2 Teaspoon