CAP (mild severity), pharyngitis/tonsillitis, uncomplicated skin/skin structure infection 500 mg as single dose on day 1, followed by 250 mg once daily on days 2-5. 
Acute bacterial exacerbations of COPD (mild to moderate) 500 mg once daily for 3 days or 500 mg as single dose on day 1, followed by 250 mg once daily on days 2-5. 
Acute bacterial sinusitis 500 mg once daily for 3 days. 
Genital ulcer disease (chancroid), non-gonococcal urethritis & cervicitis 1 g single dose. 
Gonococcal urethritis & cervicitis 2 g single dose.