I googled it, which is why I questioned if you were instructed to put it on the incision site. The site I came across also warns of heart/stroke problems because it is a heavy duty NSAID. And, apparently it does resemble plaster or something like that. So that's probably why it "peeled off". I also read It is commonly used on horses, for muscular disorders. But, on another note, I was told and have read that nothing should be put on or near the incision site until it is completely healed. Glad you didn't cover it...that could have been really bad. I take it you're not using it anymore. Have a restful night and keep up with your good recovery!