It wouldn't be a good idea to mix all of those, but I've mixed a lot of stuff myself. soma's with ambien and xanax and klonopin and hydrocodone and Oxycontin. (no kidding) but it isn't wise to mix...
I don't know how safe it is, but I have been taking Xanax, Seroquel and Cymbalta (or Effexor XR before the Cymbalta) for about 1 1/2 years now. I take them together at night to sleep and it works...
Maybe. Seroquel can cause significant drowsiness, as can Ambien (obviously). Due to the overlapping "side effects," this combination should only be used in patients for whom a doctor has determined...