I have been on Effexor 75mg twice day for over 2 years. Due to weight gain, my doctor told me to stop effexor and start Contrave the next day. It is day 2 of stopping effexor and starting contrave. I am having a lot of dizziness and ringing in the ears from the effexor withdrawals, not to mention irritability. (I have experienced this before when I would forget to take it but this time it is much worse) I am also having nausea which I am contributing to Contrave. I have been so ill with these symptoms today that I am wanting to stop the contrave and go back to the Effexor 75 mg twice day. I took contrave over 8 hours ago. When is it safe to start taking effexor again?