Gluten Free! Made with Organic Milk Thistle Seed Standardized with 80% Silymarin Liver Support 90 Non-GMO Vegetable Capsules Herbal Supplement Certified Organic by Oregon Tilth (OTCO)Milk thistle has been used and extensively studied as an aid to healthy liver function. Silymarin, although well-known, is bit one of many liver supporting substances found in the seed of milk thistle. By combining the scientifically accepted dose of silymarin with pure, freshly powdered, certified organic milk thistle seed, this formula blends science with tradition to provide a supplement containing an entire spectrum of beneficial components from this herb.