BioSilymarin is one of the most potent natural products for liver health. It is made with 100% natural Milk Thistle seed extracts using one of the highest available concentrations. Each capsule contains 500 mg of milk thistle seed extract powder standardized to 80% Silymarin (the active ingredient in milk thistle) equating to 400 mg. Milk thistle supports the health of the liver as well as improves lactation.