L-Arginine L-Aspartate :- Three weeks of L-arginine-L-aspartate supplementation resulted in lower blood lactate concentrations and oxygen consumption, diminished glucose and enhanced fat oxidation, and reduced heart rate and ventilation during submaximal cycle exercise. L-arginine is used for chest pain (angina), narrowing of blood vessels that causes poor blood flow to the limbs (peripheral arterial disease), high blood pressure, erectile dysfunction (ED), a pregnancy complication marked by high blood pressure and protein in the urine (pre-eclampsia).