L-ARGININE HCL PF is a high purity pharmaceutical grade chemical compound. It is a white crystalline powder that is freely soluble in water and very slightly soluble in ethanol. L-ARGININE HCL PF contains not less than 98.5% and not more than 101.0% of L-Arginine monohydrochloride on dried basis. It has a characteristic taste and clear colorless solution state. L-ARGININE HCL PF meets stringent specifications for assays, related substances, heavy metals, and other parameters. It can be used as an active pharmaceutical ingredient (API) or excipient in various dosage forms due to its beneficial properties. As an API, L-ARGININE HCL PF helps support cardiovascular health and nitric oxide production which is important for the pharmaceutical industry.