Mirtazapine, sold under the brand name Remeron among others, is an antidepressant primarily used to treat depression. Its full effect may take more than four weeks to occur, with some benefit possibly as early as one to two weeks.
Often it is used in depression complicated by anxiety or trouble sleeping.
As I recall, I was on this drug for no more than 3 months. The reason I took it in the first place was to help move on from years of taking xanax. Taking mirtazapine 15mg at night certainly helped with my insomnia, but the next morning I felt like I’d been hit by a bus and it was nearly impossible to get out of bed until lunchtime.
The other side effect was a huge increase in appetite – the local shop made a small fortune from me, as I’d be in there all the time buying junk food.
I don’t remember any significant withdrawal symptoms with this drug, apart from eating less.