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"I forgot if I had already taken my dose of Effexor XR 150mg this morning. What should I do?"

If you are unsure whether you have already taken your dose of Effexor XR 150mg this morning, it would be best to wait a few hours before taking it again. If you start experiencing symptoms of withdrawal such as numbness in the fingers, dizziness, or headaches, then you can go ahead and take it at that point.