My pm dr put me on the Butrans patch a couple of weeks ago. I have to admit I'm not overly impressed and may have to give it up due to possible developing skin issues anyway. One of the things I don't like is that now I can't do a lot of the things I do when the pain gets really bad, like soak in a hot tub or use the heating pad. The information packet with the patches warns against applying any type of extra external heat, even sunlight, because it can cause the medicine to release too much, too quickly leading to a possible overdose. I have to admit I'm a little more concerned about it releasing too much medicine thereby shortening the life of the patch. It's supposed to be a 7 day patch, but seems to lose most of its effect after 4-5 days anyway. (A common complaint I've read.) So for those of you that use the Fentanyl patch, does it have the same kind of heat restrictions? Is this common with all kinds of patches? I go back to my pm dr next week and I'd like to be able to have an informed discussion with him about this if possible. I'd appreciate any and all answers, suggestions, comments, etc...