XXL PUMP is a comprehensive amino acid complex designed for research focused on nitric oxide production, cellular volumization, and metabolic performance. Each mL contains a total of 655 mg of active compounds, including L-Arginine (100 mg), L-Citrulline (100 mg), L-Ornithine (100 mg), L-Glutamine (100 mg), L-Glycine (50 mg), L-Lysine (50 mg), Taurine (50 mg), and BCAA 2:1:1 (5 mg). This formulation supports in vitro studies of vascular endothelial function, ammonia clearance, and amino acid-driven mTOR signaling. Arginine and Citrulline are particularly studied for their impact on nitric oxide pathways, while Ornithine is used in urea cycle and detoxification research.