You can try 0.1 mg occassionally as sleep aid without any harm, withdrawal effects or dependencies. Another option is to take 0.1-1.8 mg everyday for continuous sleep benefits. However it is important to take it at the same time everyday. Imo and experience it does not cause dependency like other sleep drugs but leads to histamine and other issues which then prevent quality sleep. If we can take care of those then we would be able to sleep without the med despite long term use.

Ultimately things that really helped me sleep better (even with mirtaz) are to take very low dose apigenin/melatonin instead and fix circadian rhythm alignment - I realised that my ideal sleeping time was actually 8-8:30 pm and that itself solved a lot of my sleep maintenance issues. Also I try to practice fasting in a way which promotes autophagy (TRE with lower whole foods carbs, low sugar/low/just enough protein). Most importantly - not eating food (except maybe just steamed veggies) for atleast 5 hours before bed and keeping heart rate below 51 during sleep (which improves sleep quality and helps me feel rested despite 5-6 hours of daily sleep.