Milk Thistle seeds contain a bioflavonoid complex called silymarin that is a more potent antioxidant than Vitamins C and E. Traditionally valued for its beneficial effects on the liver and blood, Milk Thistle also protects the kidneys, spleen and gallbladder, aids in digestion, and alleviates common skin conditions related to poor liver function. It can help to relieve painful symptoms of endometriosis.