Philip Schoenfeld, MD, MSEd, MSc, co-author of the American College of Gastroenterology's Evidence-Based Guidelines on the Management of Irritable Bowel Syndrome. Current Psychiatry Web site. Symptoms of constipation can contribute to nausea and may be accompanied by stomach bloating, cramping or pain. Drowsiness After you take a dose of Cymbalta, you may feel abnormally tired or drowsy as a side effect of treatment. Doctors give unbiased, trusted information on the benefits and side effects of Cymbalta to treat Ibs (Irritable Bowel Syndrome): Dr. Rotchford on cymbalta and ibs: There is no lab test or procedure to diagnose ibs, but labs, xrays, colonoscopy, endoscopy can be used to rule out other conditions that are similar to ibs. Ibs is often diagnosed when one has the signs and symptoms of the rome. I had to wean off Cymbalta and had major problems due to the dizziness, so she kept me on Cymbalta 20 mgs and Viibryd 20 mgs for several weeks. At a routine appt, I mentioned a set of symptoms I was having that indicated seratonin syndrome, so she told me to stop the Cymbalta and increase the Viibryd to 40 mgs. Summary. There is no Bloating reported by people who take Cymbalta yet. This review analyzes which people have Bloating with Cymbalta. It is created by eHealthMe based on reports from FDA, and is updated regularly. Cymbalta (duloxetine) is a selective serotonin and norepinephrine reuptake inhibitor antidepressant (SSNRI). Duloxetine affects chemicals in the brain that may be unbalanced in people with depression. View detailed reports from patients taking cymbalta who experienced abdominal distension. Reports are from official medical reports as well as online extractions from user reviews and forum discussions. Can Cymbalta cause Bloating? Complete analysis from patient reviews and trusted online health resources, including first-hand experiences. - Page 2 Complete analysis from patient reviews and trusted online health resources, including first-hand experiences. Can Cymbalta cause Bloating? Complete analysis from patient reviews and trusted online health resources, including first-hand experiences. Complete analysis from patient reviews and trusted online health resources, including first-hand experiences. Cymbalta And Weight Gain - Cymbalta - Cymbalta ® (duloxetine HCl. All the information you need about stomach bloat and cymbalta, including common issues, symptoms and treatments. Should I call my GP or neurologist about stomach bloating and gas.