Overview of NOW Sports Beta-Alanine Beta-Alanine is a non-essential amino acid that is used by muscle cells to synthesize Carnosine. Carnosine is the dipeptide (Beta-Alanine plus Histidine) that functions as a buffer for the hydrogen acids and helps to maintain optimum muscular pH. Beta-Alanine supplementation plays a role to support muscle Carnosine content and to …