Venlafaxine
"I've been on this medication for awhile now, it was originally just for my chronic migraines, but it never ended up working for my migraines, but I've had a history of anxiety and Effexor seemed to solve my anxiety problems so my doctors have kept me on it all this time. I've noticed if I go even a little over 24 hours since I've taken my last dosage, my anxiety comes back worse than ever and I constantly throw up due to withdraw... and that's only a day of not taking it!!"