While I don't know much about temazepam specifically, it's a benzo, and I do know a lot about benzos, from lived experience and much research. If you are taking a benzo daily, you will become dependent on it, within weeks to months. Though some claim not to, in my and many experiences, you will become tolerant to its effects, also within weeks to months, longer for some. It will stop working unless you raise the dose, vicious cycle. And if you are dependent on it and tolerant to its effects, you will need a slow taper, and may experience withdrawal from mild to severe, depending a lot on your individual constitution, the same withdrawal and rebound that unfortunately comes with just about every drug with the capacity to sedate. Your body seeks homeostasis and will overcome the sedating effects of meds you put in it every day over time. I don't want to play doctor to your doctor, but I have a little experience with mirtazapine, and a bunch of others I tried while trying, ultimately unsuccessfully to get off the benzo. At a dose of 7.5 - 15 mirt is supposedly sedating but does not have an antidepressant effect. At higher doses, where it may have an antidepressant effect, it is not sedating. Wish there was better news. I found this drug to be evil, not sedating but made me feel ill, but I am super sensitive to drug side effects, you may have better luck. Also watch for metabolic changes, weight gain with or without increased food consumption, higher blood lipids, again, this probably varies from individual to individual. I know it's hard, I understand the stress of sleeplessness, I live it, but the best advice I can give to you is get off the benzo, or at least stop taking it more than occasionally, before it's too late. Yes, insomnia is life altering, but you aint seen nothing until you've experienced benzo withdrawal. It's extreme insomnia in addition to a host of other symptoms. Been there, you don't want to go there. This is hard to hear: there is not a single drug in existence that is safe to take daily and will address your insomnia over the long term, bodies adjust to every single one - just my experience and my obsessively researched conclusion. Try some non-pharm options: CBT-I or a similar therapy, abdominal breathing, meditation, relaxation, there's a lot out there that doesn't involve drugs. The effect is likely not as immediate or significant as a benzo/drug, but much safer and can help in long run if you buy into it. Belief that something will help you sleep is probably as powerful as the drug or method itself, since most insomnia has its roots in anxiety about sleeping.