Irritable Bowel Syndrome
"Linzess worked perfectly.  I did not have the cramping like I did using laxatives.  However, I had rapid weight gain...10 pound gain in just over a week.  I stopped taking it and weight started going down, started taking it again and the weight went back up.  I already fight my weight so I will not be able to use it.  I hate that cause it really worked great."