Standard dose: Adult & childn >12 yr
1-2 g once daily, may be raised to 4 g once daily in severe cases. Neonate, infant & childn 15 days-12 yr
20-80 mg/kg once daily. Neonate ≤14 days
20-50 mg/kg once daily. Max dose: 50 mg/kg. IV doses of ≥50 mg/kg should be given by infusion over at least 30 min. Meningitis Infant & childn
Initially 100 mg/kg (max of 4 g) once daily. Lyme borreliosis Adult & childn
50 mg/kg (max of 2 g) once daily for 14 days. Gonorrhea
250 mg single IM dose. Peri-op prophylaxis
1-2 g single dose, 30-90 min prior to surgery.