Welcome to Neuro Talk. This is a good place to stumble into. I did the same thing and never left. Actually your post caught my eye. You are the second to post about Viibryd in conjunction with PN of some kind. I don't know exactly where the other post is. The question was the same however. Mrs.D is correct, sometimes it takes years to discover a medication that causes that kind of side effect. I would not take the medication anylonger if I had any doubt. Report it to your doctor, and the drug manufacturer for sure. If I can find the other post, I will tap back to you. Sorry this has happened to you. NT will be here to support you. ginnie