Which antibiotics are used to treat diverticulitis?

Mild cases of diverticulitis are treated with oral antibiotics, such as ciprofloxacin, amoxicillin with clavulanate, and metronidazole, explains The Merck Manual Professional Edition. Patients with severe symptoms are treated in the hospital with intravenous antibiotics, such as ceftazidime

In addition to antibiotics, patients with diverticulitis are advised to change their diet to clear liquids for the first few days of treatment, according to WebMD. The symptoms of diverticulitis include pain, cramps and tenderness in the lower left part of the abdomen, fever and chills, abdominal bloating with swelling or gas, diarrhea or constipation, nausea and vomiting, and a loss of appetite.