This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'Which is not cysticidal for entamoeba - \nSelect and explain. \nA. Paramomycin, B. Chloroquine, C. Tetracycline, D. Diloxanide', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Chloroquine o Chloroquine kills trophozoites of E. histolytica (not cysts). Therefore, it is used in hepatic amoebiasis only. o All other three drugs are luminal amoebicides - Drugs directly kills trophozites responsible for production of cysts (cysticidal effect).", 'role': 'assistant'}]