Fast-acting lactic acid buffer, formulated to prevent muscle cramps, buffer lactic acid build-up & provide your body with vital minerals. USNs Cramp Block prevents cramping & buffers lactic acid build-up within the muscles. Cramp Block provides your body with the vital electrolytes/minerals sodium, magnesium, calcium & potassium, which help prevent cramping & general muscle fatigue. The inclusion of the amino acid taurine, regulates the absorption of these minerals. Vitamin B6 aids in maintaining sodium & potassium balance, as well as promoting red blood cell formation. Cramp Blocks advanced formula will improve your bodys energy capacity, without the debilitating effects of lactic acid build-up & cramping