I have IBS-D and have been on Elavil? for several weeks. I can tell a big difference with the D but still having terrible anxiety attacks. Now the Dr wants to put me on Effexor instead to try and control both problems. On top of it I have gained 8 pounds in a week and a half! So that is another thing I want to avoid. Any one else taking Effexor want to share?? I need some advice! I love Heather's site because I don't feel like I am "crazy" any more! HELP!!