I would like to give you hope by way of telling you that it won't last long but this depends on the amount and how long you took Seroquel. In all matters like this, consultation with a competent psychiatrist is crucial. I had been taking Seroquel for 6 years when I accidentally forgot to take it with me on a trip. I lay pretty much sleepless for a month but was somehow able to function because of mania. I was taking 750 mg for a year before this, my final withdrawal from Seroquel. I experienced one night of no sleep before I had my psychiatrist put me back on the Geodon at night. Right now I am down to 40 mg of Geodon and last night was my first good night of sleep. Right now I am alternating between one night of late sleep and early wakening - about 11 to 4:30 am and one night of sufficient sleep. I also have a part-time job which I am more or less able to carry out but i need to have some breathing room during this transition. I read briefly about the trintellix (Vortioxetine) you are taking and it seems like it might cause slight agitation but not sleepiness. My advice is not to go on a sleeping med but to find some alternate medicine that would treat the depression but would also cause some somnolence. I am not licensed in any way but I think that might be the best way forward. I am not currently aware of any anti-depressants that cause sleepiness but there might be some. Good luck.