Hi. I was on Elavil for awhile after I tried neurontin,lyrica etc. I did not gain weight but it did not help my pain or sleep. I think around the weight issue and I have tried many that do make one gain like Lyrica is that I try to trust my doctor and take one day at a time. It may not happen to you or the relief of pain may be worth it. If you are concerned try to discuss with your doctor. I saw your other post on Lexapro which I was on but not in combo and it was before the pain issue. I hope in any regards you find what helps you with the least side effects. Hang in there