Desvenlafaxine
"I have been taking Pristiq for about 8 months. No problems, no side effects, my anxiety was magically gone. I have tried several medications and had side effects to all of them so I was amazed when I had 0 side effects to pristiq. This month my formulary changed and my insurance forced me to change to desvenlafaxine succinate ER instead of name brand. A week later I feel like I'm detoxing. Dizziness, light headedness, achy muscles and my anxiety keeps creeping up on me. I'm wondering if anyone else has had this problem?"