Adult Usual dose: 250 mg 8 hrly.
Bronchitis & pneumonia 250 mg tid.
Sinusitis 500 mg tid for 10 days.
Pneumonia & other more severe infections Max: 4 g/day for 28 days.
Acute gonococcal urethritis 3 g as a single dose combined w/ probenecid 1 g.
Childn Recommended dose: 20 mg/kg/day in divided doses 8 hrly.
Bronchitis & pneumonia 20 mg/kg/day in divided doses tid.
Serious infections, sinusitis, otitis media & infections caused by less susceptible organisms 40 mg/kg/day in divided doses. Max: 1 g/day.