Milk thistle extracts silymarin milk thistle seeds from compositae medicinal plants are extracted from the seed of the plant extracts, yellow powder or crystal powder, taste bitter. Soluble in acetone, ethyl acetate, ethanol and methanol, hardly soluble in chloroform, insoluble in water. Main ingredients are bean milk thistle, different bean milk thistle, milk thistle ning and flavonoids of milk thistle pavilion, etc. The material has the following functions: protect liver cells from toxic substances, especially alcohol and environmental pollutants (pesticides, heavy metals, etc.) intrusion damage to the liver; Has strong anti-oxidation function, can protect liver cells from free radical damage, the effect is far better than the vitamin E; Promote protein synthesis, to speed up the manufacturing of new liver cells, or to repair damaged liver cells. So called "natural protect liver medicine". Silymarin has other radiation resistance, anti-aging, prevention and treatment of atherosclerosis, delay the ageing of the skin effect and so on. The product is widely used in medicine, health care products, cosmetics, food and other products in production. Silymarin the dosage form is oral preparations: silymarin tablets, spirit benefit liver slice, milk thistle bean lecithin complex hard capsule. Trade name are:, liver, lung and galleons, spirit benefit liver, etc. Injection is mainly to make milk thistle bean derivatives, such as: Portugal - n. methyl amine salt.