Tablet or Suspension-

Adolescents and adults (13 years and older)-

• Pharyngitis/tonsillitis: 250 mg b.i.d. for 5-10 days
• Acute bacterial maxillary sinusitis: 250 mg b.i.d. for 10 days
• Acute bacterial exacerbation of chronic bronchitis: 250-500 mg b.i.d. for 10 days
• Secondary bacterial infections of acute bronchitis: 250-500 mg b.i.d. for 5-10 days
• Uncomplicated skin and skin structure infections: 250-500 mg b.i.d. for 10 days
• Uncomplicated urinary tract infections: 250 mg b.i.d. for 7-10 days
• Uncomplicated Gonorrhoea: 1000 mg Single dose
• Community acquired pneumonia: 250-500 mg b.i.d. for 5-10 days
• MDR Typhoid Fever: 500 mg b.i.d. for 10-14 days
• Early Lyme disease: 500 mg b.i.d. for 20 days

Paediatric Patients (3 months to 12 years)-

• Pharyngitis/Tonsillitis: 20 mg/kg/day b.i.d for 5-10 days
• Acute otitis media: 30 mg/kg/day b.i.d for 10 days
• Acute bacterial maxillary sinusitis: 30 mg/kg/day b.i.d for 10 days
• Impetigo: 30 mg/kg/day b.i.d for 10 days

Parenteral-

• Adult: 750 mg three times daily by IM or IV injection. In severe infections, dose can be increased upto 1.5 gm three times daily by IV injection. The frequency may be increased to four times daily, if necessary, giving total daily doses of 3 to 6 gms.
• Children (above 3 months of age): 30 – 100 mg/kg/day given in 3 or 4 equally divided doses. A dose of 60 mg/kg/day is appropriate for most infections.
• Neonate: 30 – 100 mg/kg/day given in 2 or 3 equally divided doses.
• Surgical prophylaxis: 1.5 gm by IV injection at induction of anaesthesia; up to 3 further doses of 750 mg may be given by IV/IM injection every 8 hours for high risk procedures.
• Pneumonia: 1.5 gm IV injection twice daily for 2-3 days, followed by 500 mg twice daily (oral) for 7-10 days.
• 
  Acute exacerbations of chronic bronchitis: 750 mg twice daily (IM or IV injection) for 2-3 days, followed by 500 mg twice daily (oral) for 5-10 days. (Duration of both parenteral and oral therapy is determined by the severity of the infection and the clinical status of the patient.)
• In Gonorrhoea: Adult: 1.5 gm as a single dose (as 2 x 750mg injections intramuscularly with different sites, e.g. each buttock).

In Meningitis:

• Adult: 3 gm IV injection three times daily.
• Children (above 3 months of age): 200-240 mg/kg/day by IV injection in 3 or 4 divided doses reduced to 100 mg/kg/day after 3 days or on clinical improvement.
• Neonate: 100 mg/kg/day by IV injection at initial dose, reduced to 50 mg/kg/day, When clinically indicated.

In bone and joint infections:

• Adult: 1.5 gm IV injection four times daily.
• Children (above 3 months of age): 150 mg/kg/day (not to exceed the maximum adult dose) in equally divided doses every 8 hours.