Beta Alanine 1500MG. supports muscular endurance. Improves workout performance. Powerful pre-workout performer. 4 dimension Beta-Alanine is a non-essential amino acid used by muscle cells to make Carnosine, which acts as an acid buffer during exercise and helps promote intramuscular pH balance. During high intensity training, hydrogen ions (H+) are also produced within the muscles. H+ accumulation causes the muscle to become more acidic and ultimately leads to fatigue.