Jarrow Formulas Arginine + Ornithine contains only crystalline, pure free form amino acids. L-Arginine is a semi-essential amino acid synthesized by the body from Ornithine. Arginine and Ornithine support protein synthesis as they are involved in the transport and storage of nitrogen. Arginine, as a part of physical performance, is used by muscle tissue to produce creatine.
*  Note: Unless otherwise noted, this product has not been evaluated by the Food and Drug Administration. Our natural products are not intended to diagnose, treat, cure, or prevent any disease.