Metronidazole (Flagyl) 500 mg orally twice a day for 7 days ... 12 h until delivery GBS = Group B streptococcus; IV = intravenously; PCN = penicillin. Source: Centers for Disease Control and ...
Cefazolin* (Ancef) 2 g IV initial dose then 1 g IV every 8 h until delivery Clindamycin † 900 mg IV every 8 h until delivery Erythromycin † 500 mg IV every 6 h until delivery If PCN allergic ...