I cannot fathom why any doc would not wean you down slowly from 8 mg of klonapin. This should be done over a matter of weeks or months, not immediately. 8 mg is a pretty large dose, most I ever took was maybe 2 mg many years ago for a short time, 1mg seems to be enough right now for my current episode. Effexor is also something you just don't stop without a really good reason, and in any case quite a few folks seem to have bad withdrawal reactions from going off it, especially suddenly, so going off slowly as advised by a pdoc who is experienced with it would be better. Maybe going down on it while starting and upping, slowly, the Lexapro could work, but again check with a doc that has actually done this successfully. I am assuming the Effexor was not working for you, if it was, than it would be better to stay on it unless there were bad side effects or some other reason to go off. I'd have a lot more questions for the doc and you should certainly let them know how you are feeling, actually I'd probably go find a different doc in this case.