Milk Thistle is a traditional herb derived from a purple flower surrounded by a sharp array of thorns calledthistle.Flavonoids collectively called silymarin are the active components found in Milk Thistle.Each liquid serving contains 500 mg of Milk Thistle Extract.Included is a calibrated dropper for easy dosing.Alcohol free.Milk Thistle has been used in holistic health traditions for nearly 2,000 years. Today, Milk Thistle remains a favorite herb for naturally supporting overall health and well-being.**1 fl. oz. liquid.