"does anyone have a cough with taking effexor xr?  this has helped me a lot. i had been on zoloft, paxil, prozac and effexor was the best. feel more normal and have taken it since 2008. it does cause constipation. i tried going off of it once and i was back on it within 3 days. it was horrible. does anyone have neck pain with it or maybe it&#039;s something else going on for me."