Anatomy Other topics and Adverse effects bfd34a13 Metrinidazole is least likely to be effective in the treatment of A Hepatic amoebiasis B Infection caused by bacteroides fragilis C Pseudomembranous colitis D Pneumocystosis High-Yield Explanation Ref-KDT 6/e p686 Metranidazole is not effective against pneumocyst infection. The DOC for this condition is cotrimoxazole