Milk Thistle Extract is the highest content component of silymarin. It has pharmacological activities such as scavenging free radicals, anti-lipid peroxidation, protecting liver cell membranes, promoting the synthesis of DNA and structural proteins of damaged liver cells, and anti-fibrosis. Metabolic toxic liver injury and liver cirrhosis have good curative effects. They have been marketed as drugs and are recognized as therapeutic drugs for liver injury in the world.