IM/IV Adult 1-2 g daily as a single or in 2 divided doses.
Severe infections Up to 4 g daily.
Gonorrhea 250 mg IM as single dose.
Surgical infection prophylaxis 1 g as single dose 0.5-2 hr prior to surgery.
Childn Serious infections 50-75 mg/kg daily in equally divided doses every 12 hr or in single daily dose. Max: 2 g.
CNS infections 100 mg/kg in equally divided doses every 12 hr or 75 mg/kg as a loading dose to initiate therapy.
Hepatic dysfunction &/or significant renal disease Max: 2 g daily.