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: Gynaecology & Obstetrics
DOC for bacterial vaginosis in pregnancy 
Select and explain. 
A. Clindamycin, B. Erythromycin, C. Rovamycin, D. Metronidazole
D: Metronidazole
Answer: D: Metronidazole 
Explanation: Ans. D. MetronidazoleMedication--Treatment should include both paners.Oral Metronidazole--500 mg orally twice daily after meals for 7 days. Or 2 g stat.Advisable to defer treatment during first trimester of pregnancy.Side effects: nausea, metallic taste, antabuse - like reaction to alcohol.