irritable bowel syndrome
"I too had a problem breathing and tightness in my chest. The doctor didn't believe that it was my new medicine and started treating me for asthma. I started reading about the medicine and learned that this was a side effect. I stopped taking it for a week or so and I have noticed a big difference in my breathing! I love the outcome of the medicine so I am going to try to take it only 2 or so times a week to see if that helps."