Glutathione is a more classic liver-protective drug in hepatology, which is suitable for various types of liver diseases, such as hepatitis, cirrhosis and liver failure, etc. It not only has enzyme-lowering effect, but also has anti-yellowing effect. Glutathione is a tripeptide substance composed of glutamic acid, cysteine and glycine, which is an antioxidant and can inhibit the generation of free radicals and reduce the damage of free radicals to liver cell membranes. In addition, glutathione can promote the synthetic function of liver, replenish the loss of glycine and taurine in liver disease, improve fat metabolism and absorption of fat-soluble vitamins. Adverse reactions are relatively rare, occasionally rash, epigastric discomfort, nausea, etc., which can disappear by themselves after stopping the drug.