Adult 250 mg bid.
Severe infection 500 mg bid for 6-14 days.
Mycobacterial infections 500 mg bid.
Renal impairment CrCl <30 mL/min 250 mg once daily or bid for severe infections for not >14 days.
Childn 15 mg/kg/day divided dose 12 hrly up to 500 mg bid for 10 days.