Used in pharmaceutical formulations as a source of L-arginine, particularly in parenteral nutrition to support protein synthesis and wound healing. Plays a role in managing conditions related to nitric oxide deficiency due to its conversion to nitric oxide in the body, aiding in vasodilation and improved blood flow. Commonly included in amino acid infusions for patients unable to take oral nutrition. Also utilized in some cardiovascular diagnostic tests and in the treatment of urea cycle disorders. In research, it serves as a cell culture supplement to study endothelial function and immune response.