Since 1969 Liver Support Formula 80% Silymarin Dietary Supplement Thisilyn® Standardized Milk Thistle extract supports liver function. The active component in Milk Thistle, silymarin supports antioxidant pathways in the body. Thisilyn is uniquely formulated and tested for purity and disintegration. Disintegration testing helps verify that the silymarin in Thisilyn dissolves quickly and easily in the digestive tract.