Gaia Herbs - Organic Milk Thistle Seed Liver & Cleanse Support - 1 fl. oz. 1 oz. (30 ml) Gaia Herbs Certified Organic Milk Thistle Seed (Silybum marianum) Liquid Herbal Extract. Milk Thistle Seed a natural source of plant antioxidants. Its an ultimate support for healthy liver function. Also Milk