Our most effective milk thistle supplement for all-natural liver support! Nature's premier liver tonic, milk thistle delivers a natural flavonoid complex known as silymarin, which has unique protective benefits for liver tissues. Recently, researchers have identified one constituent of silymarin, silibin, as the most biologically active. The problem is, silibin is not readily absorbed by the body. That's where SILIPHOS comes in. This advanced milk thistle supplement uses patented Phytosome technology to bind silibin to natural soy phospholipids for enhanced bioavailability.