IT EXERTS ITS ACTION BY STIMULATION OF RNA POLYMERASE A. IT IS A STRONG ANTIOXIDANT AND INHIBITS PROSTAGLANDIN SYNTHETASE LEADING TO DECREASE IN PROSTAGLANDIN SYNTHESIS. SILYMARIN CHANGES THE MEMOBRANE PHOSPHOLIPID TURNOVER IN SUCH MANNER THAT CERTAIN TOXINS CANNOT ENTER THE CELL. IT ENHANCES THE MITOTIC POTENTIAL OF KUPFFER CELLS RESULTING IN INCREASED PHAGOCYTIC ACTIVITY. IT ALSO
CAUSES INCREASED GLUTATHIONE SYNTHESIS IN LIVER, WHICH IS REQUIRED TO DETOXIFYING ACTION OF LIVER.