"i have been on pristiq for 11 days after switching from paxil 12.5 cr.  i feel like i&#039;ve been on a roller coaster ride.  agitation, shaky, anxiety and emotional. the nausea and headaches are gone now but i&#039;m thinking this is not the right medicine for me.  i will give it 14 days and if there is no improvement i will get off them. not sure what i&#039;ll try next. the doctor thinks wellbutrin. "