Like a number of others on this list, I have found that protein seriously interferes with the action of Sinemet. I have got around this by avoiding protein during the day and having a more normal meal late at night. I noticed that dairy products seemed to cause most difficulty - milk seems to cause the PD symptoms to appear very rapidly - it seems to be something more than an interference with absorption of sinemet into the blood stream. I have found that I do not get the same problem if I drink soya milk even though, according to the label, soya milk has more protein than cows milk. I have also tried eating Roquefort cheese which is made from sheeps milk and this does not appear to affect the action of sinemet. Am I alone in having these difficulties in digesting cow's milk or is this a common problem? Nigel Cockle 51/12