Antibiotic class and agent | Oral dosing* |
Macrolides | |
Azithromycin | 500 mg on day 1, then 250 mg once daily for 4 days or 500 mg once daily for 3 days |
Clarithromycin | 500 mg (immediate-release) twice daily or 1 g (extended-release) once daily |
Cephalosporins | |
Cefuroxime (2nd generation cephalosporin) | 500 mg twice daily |
Cefdinir (3rd generation cephalosporin) | 300 mg twice daily or 600 mg once daily |
Cefpodoxime (3rd generation cephalosporin) | 200 mg twice daily |
Beta-lactamase inhibitor combination | |
Amoxicillin-clavulanate | 875 mg/125 mg twice daily or 500 mg/125 mg three times per day |
Respiratory fluoroquinolones | |
Levofloxacin | Without risk factors for Pseudomonas infection: 500 mg once daily With risk factors for Pseudomonas infection: 750 mg once daily |
Moxifloxacin | 400 mg once daily |
Other fluoroquinolone | |
Ciprofloxacin | 750 mg twice daily (anti-Pseudomonas dosing) |
The duration of therapy for patients who are clinically improving is generally 5 days. However, azithromycin can be given for as few as three days when administered at a dose of 500 mg orally daily because of its long half-life. |