This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hematology, Subject name: Pharmacology
[{'content': 'Drug used in heparin overdose is: \nSelect and explain. \nA. Protamine sulfate, B. Phylloquinone, C. Ticlopidine, D. Clopidogrel', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 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', 'role': 'assistant'}]