Hi there

Well...it could be the Effexor.  I wrote a two part article some time ago which has many responses from people...and one of the medications people really wanted to talk about was Effexor.  Some people report huge weight gains.  Here is the specific page where you will find that thread.  Go to comment #11.

Here is another source which says that it is a possibility to gain weight on this medication but is considered rare. 

There are clearly mixed reviews on this.  I would definitely talk to your doctor about this...and you can refer to my articles about antidepressants and weight to see suggestions of which ones are not supposed to make you gain weight...Wellbutrin comes to mind at the top of the list.

Hope this helps some...thank you for your question!

blond007

7/21/09 7:29pm

thanku so much-very interesting and helpful info

blond007

7/21/09 7:30pm

thnku teri

star bright

1/15/11 2:11am

Hi,

I have been on Effexor 150 mg for about a year now, and have noticed a significant increase in weight gain, and i haven't really changed my eating habits, i consulted another Dr. about the Effexor and if it causes weight gain, and he said it definately does cause weight gain and it also slows down your metabolism, so needless to say i am going off this drug!