I am hoping someone can help me out. 2 weeks ago I went completely off of 25 mg of Lexapro. The same day I started taking 10mg of the new medication Viibryd and am continuing to up the dose per instructions. I am experiencing light headedness and palpitations from Lexapro withdrawl as well as the side effects of the new medication. Does anyone know how long the withdrawls for Lexapro last even with being on a new medication? It has been 2 weeks now and not getting better. :(