What is beta-alanine?

Beta-alanine is a nonproteinogenic amino acid (it is not incorporated into proteins during translation). It is synthesized in the liver and can be ingested in the diet through animal-based foods like beef and chicken. Once ingested, beta-alanine combines with histidine within skeletal muscle and other organs to form carnosine — the role of which is to maintain the acid-base balance in skeletal muscles, the brain, and the heart. Beta-alanine is the limiting factor in muscle carnosine synthesis.