Adult 2-4 g daily in equally divided doses every 12 hr.
Severe infections May be increased to 8 g daily in equally divided doses every 12 hr.
Uncomplicated gonococcal urethritis 500 mg IM as single dose.
Childn & infant 50-200 mg/kg daily in 2 divided doses every 8-12 hr. Max: Not to exceed 12 g daily.
Neonate <8 days 50-200 mg/kg daily every 12 hr.
IV administration in adult & childn 1-2 g over 15 min-1 hr. Max dose for adult: 2 g/administration. Max dose for childn: 50 mg/kg/administration.
Antibiotic prophylaxis of surgical procedures 1-2 g IV 30-90 min pre-op.
Renal dysfunction Max dose: 4 g daily.
Hepatic dysfunction & concurrent renal dysfunction Not to exceed 2 g daily.