I am prescribed both. I take trazodone most nights and Ambien when needed. Either way I don't sleep. Some nights I want to try both due to the fact I have many 100% sleepless nights. 200 mg of trazodone and 10mg Ambien. I see my psych dr tomorrow but I desperately need to sleep tonight. I haven't slept in i don't know how long cuz I'm stuck in this fog. Thanks in advance!