I have been diagnosed with diverticulitis and gastroparesis. I have had about 7-8 diverticulitis attacks beginning in 2006. I was diagnosed with gastroparesis in Dec of 2013. I have been miserable with pain and nausea with these last two attacks which were a month apart. My doc prescribed Diverticulitis can cause symptoms ranging from mild to severe. These symptoms can appear suddenly or they can develop gradually over several days. Drugs Used to Treat Diverticulitis. The following list of medications are in some way related to, or used in the treatment of this condition. What is Flagyl. Flagyl (Metronidazole) is a medication that can be used in treating bacterial infections. This pharmacotherapy is proven to be effective for the treatment of anaerobic bacteria. Medications and prescription drug information for consumers and medical health professionals. Online database of the most popular drugs and their side effects, interactions, and use. Flagyl (metronidazole) is an antibiotic prescribed to treat various parasitic and bacterial infections (Giardia, C. diff, H. pylori). Common side effects are headaches, nausea, and metallic taste in the mouth. Pregnancy and breastfeeding safety information are provided. User Reviews for Flagyl to treat Bacterial Infection. The following information is NOT intended to endorse drugs or recommend therapy. While these reviews might be helpful, they are not a substitute for the expertise, skill, knowledge and judgement of healthcare practitioners in patient care. Doctor answers on Symptoms, Diagnosis, Treatment, and More: Dr. Lambe on diet for diverticulitis recovery: Acute diverticulitis is associated with swelling of the colon that may create a temporary partial blockage of the colon. Therefore, we often advocate no food or just liquids during the initial phase of treatment. When food is resumed, it. Diverticulitis: This painful intestinal disease would be the unfortunate result of a lack of fiber in the diet. Most cases of diverticulitis can be treated with medication and rest, and relapses can be prevented through healthy eating. Diverticulitis is a form of colitis that can be serious if not caught early. In this detailed guide, learn the signs of diverticulitis, how it’s diagnosed, what to eat to prevent or manage.