ARGININE X-PLODE is a booster with a high proportion of l-arginine to increase muscle pump & vascularity.• increases the muscle pump by 4000 mg l-arginine per serving• improves blood circulation & oxygen supply to the muscles• enhances the volume of muscle cells• also contains the amino acids l-ornithine (2000 mg), l-tyrosine (2000 mg) & l-lysine (500 mg)• caffeine Free! if you support your workout with ARGININE X-PLODE the effectiveness of your entire post-workout nutrition is enhanced because the applied nutrients can be absorbed better by the muscles.