DL-Methionine is one of the 18 common amino acids and one of the eight essential amino acids for animals and human body. It is mainly used as a feed additive for fish, chickens, pigs and cows to maintain healthy growth of animals and poultry, improve milk secretion of dairy cows and prevent the occurrence of erythrocytosis. DL-Methionine can also be used as amino acid drugs, injection solution, nutritional infusion, hepatoprotective agent, treatment of cirrhosis and toxic hepatitis.DL-Methionine is one of the main components of amino acid injection and compound amino acid.DL-Methionine has the function of anti-fatty liver, and by using this function, the synthetic medicinal vitamins can be used as the hepatoprotective agent. DL-Methionine can be added to animal feed to help animals grow faster in a short period of time and save about 40% of feed. DL-Methionine can also be used as an important component of protein synthesis and has a protective effect on the heart muscle. At the same time, DL-methionine can be converted to taurine through sulphur, which has a very obvious effect on lowering blood pressure. DL-methionine also has a good hepatoprotective and detoxification function, so it is commonly used in the treatment of cirrhosis, fatty liver and other liver diseases, as well as all kinds of acute and chronic viral hepatitis, the effect is very outstanding.