It is a dipeptide composed of β-alanine and histidine, with core functions of antioxidation, regulating cellular metabolism, and protecting tissues. It has outstanding antioxidant capacity, which can scavenge free radicals and reduce cell damage caused by oxidative stress, especially exerting a protective effect on tissues such as muscles and nerves. It can buffer the intracellular pH value, maintain acid-base balance, help muscles stabilize their functions during high-intensity exercise, and relieve fatigue. In the food industry, it can be added to meat products as a natural antioxidant to delay fat oxidation and extend the shelf life. In nutritional supplements, it is often used in sports nutrition products to assist in improving athletic performance and recovery.