Promotes Glutathione Production* Milk thistle has been used by traditional herbalists for centuries. Clinical and non-clinical studies have indicated that milk thistle extract may help maintain healthy liver function through its ability to promote glutathione production, as well as by supporting the body's normal detoxification processes. * This maximum strength product has more milk thistle extract (750 mg per capsule) than our regular strength product (150 mg per capsule). Natural color variation may occur in this product.