Which of the following drugs is LEAST effective luminal amoebicide?: (A) Metronidazole, (B) Diloxanide furoate, (C) Iodoquinol, (D) Paromomycin
Answer is A. (Ref: KDT 6/e p798, 799) Metronidazole is least effective luminal amoebicide because it is almost completely absorbed in small intestine and little drug is available to act in the colon.