Silymarin, the active ingredient of Milk Thistle seeds. Silymarin is the most potent natural component for liver health. Silymarin acts as an antioxidant by reducing free radical production and lipid peroxidation, has antifibrotic activity and may act as a toxin blockade agent by inhibiting binding of toxins to the hepatocyte cell membrane receptors. It cleans the liver of toxins caused by alcohol consumption, artificial growth hormones, or side effects of taking different medications for extended times. New studies have shown that Silymarin consumed by nursing women increased milk production by ~ 86% without any side effects or body odor.