Why Milk Thistle Seed Extract - 1,000 mg ? Milk thistle extract is derived from a beautiful purple flower. Milk thistle grows wildly all over the world and contains the active constituent silymarin. Records of milk thistle date all the way back to 40AD with Greek botanist Dioscorides. Milk Thistle (Silybum marianum) is a clinically-studied, liver-protective botanical that has been researched in humans and widely used in for promoting liver health.*  Milk Thistle naturally contains a group of flavone lignans, unique to the plant, which are collectively known as silymarin, and are the biologically-active, beneficial compounds found in Milk Thistle.  Silymarin is a powerful antioxidant that research has shown protects the liver from free radicals, promotes healthy liver function, and is a potent hepatoprotectant.*  Each capsule contains the equivalent to 1,000mg of milk thistle seed to promote healthy liver function and antioxidant support, and is fortified with 50mg of dandelion root for additional benefits.* About Bronson Since 1960, Bronson has been providing families with the highest quality products and finest customer service available. This 60-year heritage speaks for itself. But with so many online vitamin stores, why should you purchase supplements from Bronson?  In short, our company is time proven, offering the purest, high quality vitamins backed by science. Trust Bronson to provide the very best natural health products for you and your family.