I have been taking Viibryd for 5 days. I am beginning to have a lot of muscle tension in my jaw, neck and shoulders. I experienced the same side effect while I was taking Pristiq, once I stopped, the pain and tension went away. Now, I am taking Viibryd, I am beginning to feel the pain from the muscle tension return. Has any one else experienced this type of side effect while on Viibryd? If so, what was your remedy?