"i&#039;ve been on mirtazapine for 10 months. it doesn&#039;t help to lift my mood but it was put in place to help with my insomnia i had from my cfs. i&#039;ve been on 15mg, 30mg and 45mg none of these helped with my depression. but it did help me to sleep for 8 months on 30mg. only bad side effect was it made me extremely hungry and i put on 2 stone. 15mg was the most sedating - although that&#039;s even stopped working for me now."