... working so my dr just switched me to Brintellix 20 mg. Second day without the Viibryd and I'm constantly having the all over itching I would get if I took a dose too late. I've been trying Benadryl but that only helps a tiny bit. I feel like I fell asleep in a bed of poison ivy like it's debilitating. Can anyone shed some light as to how long I'll be suffering with this?