Herbal Supplement. Made with organic milk thistle seed. Standardized with 80% silymarin. Liver support. Gluten free! Milk thistle has been used and extensively studied as an aid to healthy liver function. Silymarin, although well-known, is but 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. Certified organic by Oregon Tilth. Capsule Material Information: 100% vegetarian; non-GMO; natural; effective at preserving freshness by having low oxygen permeability. (These statements have not been evaluated by the Food & Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.)