IV/IM Adult Dose range: 1.5-6 g/day. Many infections will respond to 750 mg tid IM/IV. Should be increased to 1.5 g tid IV for more severe infections. Inj frequency can be increased to 6 hrly if necessary.
Gonorrhoea 1.5 g as single dose. May be given as two 750-mg inj into different sites.
Prophylaxis 1.5 g IV w/ induction of anaesth for abdominal & gynaecological operations, may be supplemented w/ two 750-mg IM doses 8 & 16 hr later.
Cardiac & pulmonary operation 1.5 g IV w/ induction of anaesth continuing w/ 750 mg IM tid for a further 24-48 hr.
Infant & childn 30-100 mg/kg/day given as 3 or 4 divided doses. Dose of 60 mg/kg/day will be appropriate for most infections.
Patient w/ marked renal impairment (GFR 10-20 mL/min) 750 mg bid,
severe renal impairment (GFR <10 mL/min) 750 mg once daily.
Patient on dialysis A further 750 mg dose should be given at the end of each dialysis,
continuous peritoneal dialysis 750 mg bid.