I was on Effexor 150mg for 10 years and wanted to be drug free. The Dr. said it would be a difficult withdrawal process and suggested I get on pristiq as it would be easier to withdraw from. What a nightmare! I switched on November 28th from Effexor 150mg to Pristiq 100mg and after 3 weeks went down to 50 mg and then cut in 1/2 (25mg) for 3 days. I've had it... I didn't take any last night. I am at work and feelng so dizzy. What should I do? I need to get through this. I don't want this poison in my body any longer. Can I take anything for dizziness?