I have been on mirtazapine 7.5 for about a year and a half. Finally weaned off Ativan which was no longer helping me sleep plus I wanted off of this benzo. I have been sleeping well ever since. Am groggy when I wake up, but it’s worth it!! All my doctors (pcp, sleep med, oncologist) are comfortable with my being on mirtazapine long term, unlike lunesta and Ativan.
You can also get a genetic study to help determine which drugs work best. Best wishes to you!!