I am finding all this talk of comtan interesting. My neuro put me on comtan only a couple of weeks ago. I have found that it does just what he said it would, that is stretch out the sinemet and I have had less up/down dyskinsea and dystonia. As to hallucinations, I am so careful about the amount of sinemet I take because when I was first put on it the dose was too high and I had some whoppers. Marling 51/5 still trying to laugh