Desvenlafaxine
"I am a 47 yo male who has been on 100mg of Pristiq for 2 years.  First on 50mg then increased.  I found I was sleepy for the first few months but nothing compared to the original symptoms like depression, anxiety etc.  My only concern is the withdrawal effects.  On one occasion, I went to Pharmacy on Saturday and they advised I needed a new script.  I had to wait until Monday to get a script and they were the two worst days in my life....the withdrawal was chaotic, I argued with the chemist in a rage....never done this before...I called them an hour later sobbing and apologising for my behavior, I had awful flashes in my eyes and headaches that made a migraine feel like party.....I was frantic at the doctor on the Monday morning"