NCIt definition : A hydroxycoumarin originally isolated from molding sweet-clover hay, with anticoagulant
and vitamin K depletion activities. Dicumarol is a competitive inhibitor of vitamin
K epoxide reductase; thus, it inhibits vitamin K recycling and causes depletion of
active vitamin K in blood. This prevents the formation of the active form of prothrombin
and several other coagulant enzymes, and inhibits blood clotting.;