I have been PMed that the perceived extra effectivnes of the MS-Contin that I am experiencing at the moment will not last more than a few days. The pain I have has been constant for more than 4 years so I don't think it will go away and I do know that it is easier to get pain relief before the pain really sets in. It would also be more difficult to play catch up with a controlled release med. The trouble is that I do feel more "medicated" than usual and do not feel safe to drive. I'll give it a couple of days and talk to the Doc. They do make a weaker (15mg) version of this med. They are so small though it would be difficult to split them.