Adults: Urinary-tract infections, 200 - 400 mg daily preferably in the morning, increased if necessary in urinary-tract infections to 400 mg twice daily.
Lower respiratory-tract infections, 400 mg daily preferably in the morning, increased if necessary to 400 mg twice daily.
Skin and soft-tissue infections, 400 mg twice daily.
Uncomplicated gonorrhoeae, 400 mg as a single dose.
Non-gonococcal urethritis and cervicitis, 400 mg daily in single or divided doses.