Reflex Nutrition Beta-Alanine is the only naturally occurring Beta-Amino Acid, taken by many athletes & often used in conjunction with L-Histidine to help improve physically performance. Beta Alanine helps to raise muscle carnosine concentrations. Together with histidine it produces carnosine. Carnosine reduces lactic acid accumulation in your muscles during exercise. We all get that burning feeling which makes it harder to push on. Reflex Nutrition Beta Alanine helps raise carnosine levels & will help with fighting off lactic acid. Reflex Nutrition Beta Alanine helps increase the time to exhaustion. In other words, it helps with exercise for longer periods of time.