L-Arginine L-Citrulline Complex 120tabs by Source NaturalsL Arginine L Citrulline Complex 120tabs Dietary Supplement L Arginine and L Citrulline are two amino acids bundled into a single powerful supplement. L Arginine is an important factor in muscle metabolism and is a precursor for nitric oxide, which promotes increased circulation by relaxing blood vessels. L Citrulline helps the body rid itself of ammonia, a by product of exercise. This clearing enables the body to recover after a workout Wheat Free