Supports Peak Perfomance</br>Supports Protein Metabolism</br>Supports liver detoxification</br>Supports Heart function & Circulation</br>All Best Naturals products are manufactured in accordance with Good Manufacturing Practices (GMP), among the highest standards in the world -- Proudly Made in USA -- Purity & Potency Guaranteed</br></br>Product Description</br></br>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.</br><br/>http://www.amazon.com/gp/product/B00O5E41M0