Adult Uncomplicated infections 1 g 12 hrly IV/IM.
Moderate to severe infections 1-2 g 8-12 hrly IM/IV.
Severe infections 2-3 g 6-8 hrly IV.
Uncomplicated gonorrhea 0.5-1 g IM as single dose. Max dose: 12 g/day.
Surgical prophylaxis 1-2 g IM/IV single dose 30-60 min pre-op.
Caesarean 1 g IV at clamping of umbilical cord followed by 1 g IM/IV 6 & 12 hr after 1st dose.
Childn <12 yr & infant <50 kg 50-100 mg/kg/day IM/IV 6-12 hrly.
Severe infection Up to 150-200 mg/kg/day.
Neonate Max: 50 mg/kg/day.
Impaired renal function Reduce daily dosage.