Standardized milk thistle extract Thisilyn® Standardized Milk Thistle extract supports and promotes normal liver function.* The active bioflavonoid complex, silymarin, has antioxidative properties that helps protect the liver.* Superior milk thistle dissolution The proprietary milk thistle extract in Thisilyn is uniquely prepared and tested for purity and dissolution-ensuring the plant’s desirable benefits remain bioavailable. Dissolution testing helps ensure the silymarin in Thisilyn proprietary extract dissolves quickly and easily in the digestive tract.