Beta-Alanine is a naturally occurring non-essential amino acid that is converted to other chemicals that can then affect muscles. Beta-Alanine is used in the production of carnosine. Carnosine is needed by muscle cells to act as a buffer to control intracellular Ph. Too much acid accumulation by muscles is thought to contribute to fatigue. Some research suggests that, during high intensity weight training or sprint work, Beta Alanine can reduce the symptoms of fatigue.
Additionally, supplementation with Beta Alanine may improve the muscular endurance of older adults, as carnosine declines with age.