Supports detoxification in the liver Boosts antioxidant activity Supports healthy liver, spleen and kidney function Swanson Milk Thistle Combination is an herbal tonic for everyday liver health support, featuring guaranteed-potency milk thistle extract (standardized to 80 percent silymarin content). The formula is further fortified with liver cleansing herbs including dandelion root, black radish root, burdock root, ginger root and parsley root.