About tirofibannon peptide glycoprotein iib/iiia inhibitor, antiplatelet agent.mechanism of action of tirofibantirofiban is an antiplatelet drug. it is glycoprotein iib / iiia inhibitors. it is a reversible antagonist of fibrinogen binding to the glycoprotein iib / iiia receptor, the major platelet surface receptor involved in platelet aggregation. tirofiban works by preventing platelets aggregation. sticking of platelets each other produces blood clotsindications for tirofiban1.unstable angina 2.myocardial infarction typical dosage for tirofibaniv adult: 0.4 ?g / kg /minute for 30 minutes. then the rate is decreased to 0.1 ?g /kg /minute