Bismuth subsalicylate (Pepto-Bismol), two 262-mg chewable tablets four times daily, taken with meals and once in the evening

Ciprofloxin (Cipro), 500 mg once daily

Norfloxacin (Noroxin), 400 mg once daily

Ofloxacin (Floxin), 300 mg once daily

Doxycycline (Vibramycin), 100 mg once daily

Trimethoprim-sulfamethoxazole (Bactrim DS), 160 mg/800 mg once daily