<prompt> Drug used in heparin overdose is:Protamine sulfatePhylloquinoneTiclopidineClopidogrel  <response>: In heparin overdose an antagonist is needed to arrest it;s anticoagulant effects. Protamine sulphate given IV 1mg for every 100 units of heparin neutralizes heparin. From medical pharmacology padmaja 4th edition Page no 337 