I unfortunately do have problems with the patches falling off sporatically. They do sell these sticky/tape like things to put over them to adhere them to your skin so it sticks and will not fall off. You can duragesic/Jannsen directly if you take name brand and they will send them to you free of charge, or you can get something like it at the pharmacies like cvs, walgreens,etc., you put it over it and pull off the backing and it sticks to the patch you have on.
As for the tanning i haven't heard anything about that, EXCEPT their is a warning not to have a direct heat source exposed to the patch because it will make the medication go into your system at a higher rate than normal which can be dangerous, like using a heating pad, jacuzzi, and i guess a tanning bed would too, depends where you have the patch though.
hope this helped.
P.s. If you want to tan, you can always take the patch off while tanning and reapply after you are done.
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