insomnia
"Truly the only thing (bar Mirtazapine at one point) that has ever worked for my severe (sometimes up 1-2 entire nights in a row) and chronic insomnia (nearly a decade). It doesn't make me as drowsy in the morning as Mirtazapine which is great because then I can have a more normal sleeping pattern. I do have some really weird kind of scary side effects including minor hallucinations (like stuff moving round the room, person on a poster looked like they were dancing, face shapes in curtains swaying etc.) and feeling a bit high. However, even with these side effects it is still worth it if nothing else has worked."