Milk thistle is a common herb native to the Mediterranean and has been used for over 2000 years for nutritional support of liver function. The milk thistle flower is rich in three flavonolignins: silybin, silydianin and silychristin. When combined, they form silymarin, the bioflavonoid complex responsible for it's powerful protective and regenerative effects on the liver. New Beginnings Nutritionals Milk Thistle contains 80% silymarin making it a strong and effective supplement for liver support. Milk thistle helps protect the liver from damaging pesticides, heavy metals, and liver-damaging medications by nourishing and strengthening liver cells. Silymarin in milk thistle acts as an antioxidant, protecting the liver from free-radical damage and stimulates glutathione production. New Beginnings Nutritionals Milk Thistle capsules contain 250 mg of milk thistle herbal extract (seed) (Silybum marianum (L.) Gaertn.) Standardized to provide 200 mg of silymarin and 100 mg of milk thistle seed (non-standardized.)