I had taken Viibryd for about two months and I really liked it. It kept me energized and in a very pleasant mood. But I can tell you those electric zaps are a real pain. The first time I had one, I was laying on my couch as my two year old played beside me. It felt like someone punched or hit me in the nose . I seen a bright white flash and my head tingled! I asked my husband if she had hit me with something and he said she did not. It happened several times. I do not remember how often, like in a day or week. But they come with no warning and linger after. I was upset to change from it (my insurance didn't want to cover me on it or something) because it worked for me. But, I guess I'd rather search for something nearly as good than have that sensation and whatever they may cause.