I am 76 yrs old..have been on Effexor 150 ER mg for 15 years. Dr. originally subscribed this drug to help me “get through an emotionally difficult divorce”. Even through changes in doctors, due to changes in living locations, I never had a doctor ask me if I felt I needed to continue taking Effexor ER! So, like a “dummy”, I just kept taking it. When I changed my “Medicare Part D” pharmacy provider at end of December last year, there was a mixup in refilling this drug; consequently, I ran out & missed 4 days this week. Yesterday & during night, I suffered a very loud & severe brain zap accompanied by severe shaking with loss of bladder control.I thought I was having a seizure! This happened twice in early morning hours. I finally was able to get through to my doctor (after leaving messages for past 6 days), & got my prescription filled finally! It’s been about 2 hours since taking the drug & I can feel my body settling down. THIS IS A HORRIBLE DRUG! Until today, I never knew what an addiction was all about! After reading this blog (thankful I found it), and reading about all side effects of this drug, I am stunned to see so many of my side effects listed..what I thought, and my doctor concurred, were called specific illnesses that I have been dealing with all these past years! NOW, I realize they were “simply” side effects of this drug! Good grief…High BP, Skin rashes, Insomnia, Headaches, Back pain, Weight gain, etc..if I am able to get off this drug, by working with my doctor, I will probably be able to get off other drugs for “illnesses” caused by this medication. Thank you thank you for everyone’s helpful information!