Nala I'm somewhat in the same boat at the moment, and I have been fighting this thing for a year and a half. For me the tension this morning was so bad I was shaking my right hand and arm while walking around or sitting, that ended when I took an extra bit of klonopin. I'm on 1 mg of klonpin daily anyway, plus pristiq 50 mg (same class of drug as Cymbalta) and a small dose (about 10 mg? , its half a 15 mg pill and a bite off of the next half, I have been too chicken to go higher) of remeron at night. The latter does let me sleep, but I do wake with fast pulse and that can continue for much of the day, although there have been periods where I was more or less fine before this week. Rather than suddenly quitting the Cymbalta you may want to speak with your doc about either getting a long acting benzo like klonopin (its not hard to get here in the US, at least with most pdocs, but that sounds like its not true elsewhere) or some kind of dose adjustment if possible. Maybe another med would be a better fit for you as well. If it is a time release as Ian said, dose adjustment is more problematic, as I am finding with Pristiq which only comes in 50 mg or more. I even heard that the company that makes it has been asked to come out with a 25 mg pill, it would make things easier for some of us. But one thing you must try to realize, and I say this as one going thru the same sort of thing for a couple of days, the way you feel today is not forever, even if it feels like it will never get better. Somehow, some way, it will improve. The zombie feeling can also come from anxiety and depression, I feel it at times too, its like you can't think straight or concentrate on anything but how you feel, its impossible to focus outwards, and things sort of don't feel as "real" as they normally do, except for the mental and sometimes physical pain, of course. That definitely doesn't last forever, even on the same day there may be some respite, for me its usually evening on a bad day, mornings are the worst. Hope you feel better soon, and do keep in contact with your doc about the medication.