What can I do to alleviate my Irritable Bowel syndrome

First, I would recommend having yourself tested for any food allergies, intolerances or sensitivities. For example, it's possible you are gluten- or lactose-intolerant as both conditions present symptoms similar to those you describe. Second, I would keep track of your IBS attacks to see if stress may play a factor or at least be exacerbating your symptoms. If so, perhaps some stress management techniques would be helpful. Third, I would investigate whether the medication you mentioned or any other you're taking may be irritating your intestinal tract. If so, talk to your doctor or pharmacist to see if there's an alternative drug you can take.