It is a member of the sunflower family; after blooming the shiny black seeds used for medicinal purposes are collected.   One of the most important benefits of milk thistle is its ability to fortify the liver.   Milk thistle helps to enhance and strengthen the liver by preventing the depletion of glutathione, which is essential to the detoxifying process.  Milk thistle is also a power antioxidant.  It promotes the regeneration of healthy new liver cells, replacing old and damaged cells. It treats liver disorders such as cirrhosis and hepatitis.  Milk thistle reduces liver damaged caused by excessive alcohol intake.  Also aids in the treatment and prevention of gallstones and helps to reduce cholesterol levels.