I am thinking about taking serotonin for depression, I have a few friends that are taking it and it is working for them, the dr. has me on 75mg in the morning and 75 at night of effexor, I had a stroke feb 18 2012 and now have high blood pressure and I am a diabetic, 2, was wondering if I should stop taking the Effexor before I start taking the serotonin?