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 CarnoSyn®, 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.* Contains no: sugar, salt, yeast, wheat, gluten, soy, milk, egg, shellfish or preservatives. Caution: Beta-Alanine may cause a harmless, temporary tingling sensation on the skin for some individuals. After a few weeks of supplementation with Beta-Alanine, this sensation normally lessens or subsides. Licensed under one or more of U.S. Pat. Nos. 5,965,596, 6,426,361 and 7,504,376, each of which is owned by Natural Alternatives International, Inc. (NAI). NAI is also the owner of the registered trademark CarnoSyn®. Store in a cool, dry place. Please Recycle.