Has anyone tried this med? My PM mentioned it to me the last time I saw him and he told me it's a new pain patch used for moderate to severe pain. It only has to be replaced every 7 days but I've looked online and haven't found much about side effects except the normal opiod ones, which my PM told me the gastro effects are not as severe as with oxycontin (which I quit taking because 1) it scared me and 2) had terrible constipation no matter what I did to counteract it. Anyone have any experience with this?