Adult: The usual dose is 1 to 2 gm by intravenous or intramuscular administration once a day (or in equally divided doses twice a day).
- Pneumonia, Bronchitis, Acute bacterial otitis media, Skin and skin structure infection, Urinary tract infections, Bacterial Septicemia, Bone and joint infections, Meningitis: 1 to 2 g IV or IM once a day (or in equally divided doses twice a day); Maximum dose: 4 gm/day
- Uncomplicated gonococcal infections: 250 mg IM as a single dose
- Surgical prophylaxis: 1 g IV as a single dose 30 to 120 minutes before surgery
Infants and Children (01 month or older): The usual dose is 50 to 75 mg/kg intravenous or intramuscular administration once a day (or in equally divided doses twice a day).
- Pneumonia, Bronchitis, Skin and skin structure infection, Urinary tract infections, Bacterial Septicemia, Bone and joint infections: 50 to 75 mg/kg IV or IM once a day (or in equally divided doses twice a day); Maximum dose: 2 gm/day
- Acute bacterial otitis media: 50 mg/kg IM in single dose; Maximum dose: 1 gm/day
- Meningitis: 100 mg/kg IV or IM in single daily dose or (or in equally divided doses twice a day); Maximum dose: 4 gm/day
Duration of therapy: Continue for more than 2 days after signs and symptoms of infection have disappeared. Usual duration is 4 to 14 days; in complicated infections, longer therapy may be required.