You mean Elavil? That's funny because my back doctor wanted me to take a very small dose of it to help alleviate my back pain (it's commonly prescribed for pain and fibro, as well as depression), but my psychiatrist refused to let me try it because he said it can trigger mania.
Maybe you can take it because you are taking the other med too. It may have had something to do with me also taking Trilpetal at the time. Oh well, everyone's different. As long as it's working for you, that's great! Elavil's one of the older meds and it's supposedly very safe.
I hope you don't gain weight on it. Some of the meds cause this, and others don't.
And by the way, my vet wanted to prescribe Elavil for my very timid dog. She is afraid of everything, and he said they've had success with it in calming animals' fears. I never did try it with her because she has gotten better with time and a lot of love and patience!