NOW L-Arginine is a pharmaceutical-grade amino acid powder that supports protein metabolism and is heavily involved in muscle metabolism through its role in maintaining a proper nitrogen balance. It is an important precursor of nitric oxide (NO) and plays a role in the dilation of blood vessels. This product is tested for banned substances by LGC, a globally recognized assurance program for anti-doping in sports nutrition products. It is packaged in the USA by a family-owned and operated company since 1968.
- Pure Powder
- Protein Metabolism
- Nitric Oxide Precursor
- Steroid Tested