I have just returned from seeing my doctor in another state that did major major surgery on me over 20 years ago. I still go back to see him every 2 years. I asked him about my giant weight gain - since I have been doing all the right diet & exercise things needed to lose. What a shock. He immediately asked if I was taking a particular drug - and specifically named it. When I said yes, why? He answered it is a weight magnet. Told me how to ween myself off over the next 2 weeks. I would have never imagined this to be the cause.
Did a major internet search this morning. The drug company doesn't list weight gain as a side effect - actually says an effect might be weight loss. Then I began reading some chat boards. Well of course the doctor was right. People all over having the same side effect. So if I seem edgy over the next few weeks, it will be because I will be in withdrawal. Maybe, I shouldn't post at all. Anyway, big lesson learned - never really know what drugs can do to a body.