USN L-Arginine

L-Arginine is a powerful nitric oxide precursor that supports exercise endurance, increases blood flow, and muscle pumps while working out.* KEY FEATURES: 1000mg L-Arginine per serving Fully transparent & premium L-Arginine HCL source Take alone or stack with 3XT Power, 3XT Max Energy, or Amino Stim for a high performance pre-workout.