Increase muscle pumps. Increase vascularity. Increase muscle hardness. Argi Lean Pump up your muscles Argi Lean is an esterified form of arginine C15H22N4O3 H Cl designed to penetrate the lipid membranes of muscle cells where its unique molecular structure increases nitric oxide production resulting in full hard pumped muscles. Argi Lean works at only a fraction of the dosage required with other forms of arginine. The effects of Argi Lean are noticeable within just a few days of use. This pro