back to nursing days....hmmmmm try duoderm over top....expensive but may help and make sure skin dry and no cream or powder......dah dah dah you prob read all that!!! duoderm helped to keep on my fentanyl patch when I used them and they stayed for three days with shower but I did cover them in shower with plastic wrap and taped it up to keep it somewhat dry but always got wet......try this may help talk to pharmacist to get it....may cost $8.00 for about five of them.....but that is Canadian....lol

hope that helps a bit.....anything to keep pain free!!!!
Sincerely,
Victoaia