Milk thistle is also known as holy thistle, lady's thistle, Mary thistle.Milk thistle may protect against the liver toxicity or liver damage sometimes caused by antipsychotic drugs, such as chlorpromazine and thioridazine. Milk thistle has been used for over 2,000 years as a natural treatment for liver disorders. The plant is known in scientific circles as the Silybum marianum.
Milk thistle has been used for stomach and appetite complaints, liver problems, gallbladder problems, and as an antidote to death cap (Amanita) mushroom poisoning. Milk thistle gets its name from the milky white fluid that comes from the plant's leaves when they are crushed.
It is native to southern Europe, southern Russia, Asia Minor, and North Africa, and has also been naturalized to North and South America.