- So I just took oxycontin 10mg, oxycocet hcl/acet a5/325,(both for pain) Lorazapam 1mg... (to help me sleep) and prochlorazine 10mg (prevents barfing) I checked for interactions but didn't understand it very well, I also take effexor xr 140mg, and tamoxifen 20mg. Should I be concerned or just go to bed?