Have you checked the NET, I would bet you can not only find it but it would be cheaper than going to walgreens. Start with medical suplies, tapes and adhesives.
Good luck, Dave
If your talking about the tape that goes over fentnal patches, you can call the number on the back of the box that the patches come in and they will send you (free of charge) these wonderful patches that go right over the patch and believe me they will not come off for anything until you take them off.