Reflex nutrition beta alanine is the only naturally occurring beta amino acid taken by many athletes and often used in conjunction with l histidine to help improve physically performancer beta alanine helps to raise muscle carnosine concentrations together with histidine it produces carnosiner 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