"i&#039;ve been prescribed mirtazapine for the last 12 months now. it certainly helps me sleep and i can sleep for 12 hours easily.. only criticism i have is the grogginess and drowsiness the next morning. that lasts for around an hour. for some reason i crave junk food whilst i&#039;m taking it. so i can see why people can gain weight. i gained a stone, but being disciplined and exercising has changed that. i can&#039;t say i feel any different taking it re depression, however it is very effective for insomnia."