depression
"My doctor prescribed 37.5 mg to me.  I took one at 3:00p.m. and by 7:00p.m. I was feeling dizzy and nauseous.  I actually was able to fall asleep but woke up several times during the night with horrible nausea, shaking, anxiety, weird dreams, and the a lot of gas!  Thank goodness I had Zofran for nausea or I would have thrown up. I also had to take an Ativan for the anxiety and Imodium for diarrhea.  It's now 5:00p.m. the next day and I'm just now feeling better. I know others who use Effexor and love it so it does work for some....just not for me.  I called the doc and she quickly switched me to something else."