Have been on 10mg amitriptyline for a few years for neck and back pain and feel it helps with this and sleep. Went to the doctor two weeks ago due to anxiety which has been getting worse and she started me on sertraline. Said I would have to come off amitriptyline as it interacts with most of the SSRI's. She also said there had been some studies linking amitriptyline to memory problems. Now having really poor sleep which I'm not sure is due to the sertraline or not having the amitriptyline. Anyone else had this issue?