IM/IV/IV infusion 1 g 12 hrly increased in severe infections to 8 g IV daily in 2-4 divided doses; may be further increased up to 12 g in 3-4 divided doses.
Childn 100-150 mg/kg daily in 2-4 divided doses increased to 200 mg/kg daily in severe infections.
Neonate 50 mg/kg daily in 2-4 divided doses increased to 150-200 mg/kg daily in severe infections.
Gonorrhea 500 mg as single dose.