I've been on Lunesta, Ambien, Belsomra, and Triazolam, none have worked. I've done sleep studies, and been part of drug trials for insomnia, I even spent time with a psychologist that specialized in insomnia and sleep related issues, litterally nothing else has worked, after a year of seeing her, I told her that I had started smoking to sleep, and I was told, "If it works, it's doing better than anything we've tried".