WHAT IS MILK THISTLE: Milk Thistle is an herb that's been used in Greek health practices for more than 2,000 years. The purple flower with thorns comes from the same family as daisies and sunflowers and has traditionally been used for liver and gut health. Milk Thistle tea contains silymarin (Silybum Marianum), which helps maintain healthy liver function by supporting the structure of the outer cell membrane of liver cells. Silymarin is an antioxidant which promotes overall health and wellness. Antioxidants help fight off cell-damaging free radicals in the body.