Supports Muscular Endurance Helps Delay Muscle Fatigue CarnoSyn Carnosine Synthesizer GMP Quality Assured A Dietary Supplement Vegetarian/Vegan Non-GMO Kosher Beta-Alanine is a non-essential amino acid that is used by muscle cells to synthesize Carnosine. Carnosine is a dipeptide (Beta-Alanine plus Histidine) that functions as a buffer for the hydrogen ions (acid) produced during strenuous exercise, thus helping to maintain optimum muscular pH. NOW uses CarynoSyn, a patented form of Beta-Alanine that has been clinically tested and shown to increase muscle carnosine content, allowing muscles to work harder and longer during intense exercise. NOW Beta-Alanine is backed by scientific research demonstrating that CarnoSyn supplementation results in delayed muscle fatigue and rapid recovery time, thereby helping you attain your strength and endurance training goals.