Adult & childn 8 yr ≥45 kg
Initially 200 mg as a single dose or 100 mg twice daily followed by a maintenance dose of 100 mg/day as a single dose or 50 mg twice daily. Childn 8 yr <45 kg
4.4 mg/kg daily in 2 divided doses on the 1st day followed by 2.2 mg/kg on subsequent days. More severe infections: 2.2 mg/kg 12 hrly. Uncomplicated gonococcal, urethral, endocervical or rectal infections
100 mg twice daily for 7 days. Primary & secondary syphilis
300 mg daily in divided doses for 10 days.