Common IV Antibiotic Dosages for Acute Bacterial Meningitis*

Antibiotic

Dosage

Children > 1 month

Adults

50 mg/kg every 12 hours

2 g every 12 hours

50 mg/kg every 6 hours

2 g every 4–6 hours

50 mg/kg every 8 hours

2 g every 8 hours

2 g every 12 hours

2 g every 8–12 hours

75 mg/kg every 6 hours

2–3 g every 4 hours

4 million units every 4 hours

4 million units every 4 hours

50 mg/kg every 6 hours

2 g every 4 hours

15 mg/kg every 6 hours

10–15 mg/kg every 8 hours

40 mg/kg every 8 hours

2 g every 8 hours

2.5 mg/kg every 8 hours

2 mg/kg every 8 hours

10 mg/kg every 8 hours

7.5 mg/kg every 12 hours

6.7 mg/kg every 8 hours

600 mg every 24 hours

† Renal function should be monitored.