Antibiotics for Diverticulitis Antibiotics constitute an integral part of diverticulitis treatment. Inflammation especially due to bacteria is treated with; • Ciprofloxacin (Cipro) • Amoxicillin (Augmentin) • Doxycycline (Vibramycin) • Levofloxacin (Levaquin) • Moxifloxacin • Metronidazole (Flagyl)