silymarin is a kind of favonolignan compound, extracted from the seed capsule of plant Silybum marianum,It is yellow powder with a bitter taste. The main ingredients are: Silybin, Isosilybin, Silydiynin,Silychristin, etc. It has the efficacy for liver protecting, improving the function of liver, promotis biliation and diminishing liver inflammation. As a kind of better antioxidant, it can clea free radical in human body, postpone senility. Silymarin can protect the liver from damage of alcohol, chemical toxicant, drug, food poison, accelerate liver cell regenerating and repairing. So it is called "The natural liver-protection drug". In addition, Silymarin has the function of anti radiation and, arteriosclerosis preventing, skin-aging delaying. It is widely used in drug, health products, food and cosmetics.