anticoagulant drug pathway heparin group drug pathway 2015-12-07T09:52:28Z PW:0002326 The pharmacokinetics and pharmacodynamics pathway of heparin group drugs that reduce or prevent the formation of blood clots by activating the antithrombin III (AT) thrombin inhibitor. Genetic variations can result in changes in drug availability and can cause differences in the response of the organism to the drug. pathway vpetri