My gastro is starting me on Amitriptyline for back/abdominal pain and general IBS pain. Has anyone out there taken it? I forgot to ask him if it's safe to take with Paxil. My drug book is packed because someday we are moving, but I know one of the side effects is wieght gain of about 900 lbs. the first six months you take it. The dose is quite low, 10 Mg. He wants to see me in two weeks and thinks I started it two days ago, but I'm too chicken to start until I ask someone about it. I'm also not sure I want to be completely wiped out for a week until my body adjusts to it. Any suggestions?