I like the Lidoderm patches too. They are expensive but my prev Dr said that they can be worn longer as they only lose 5% of the drug after 12 hrs of wear. The 12 hr limit has to do with having the patch on the skin. I place the patch on saran style wrap after I am done wearing it and reapply to clean skin again for up to a week. I use medical tape on the corners of the patch to reapply the next time. You may need to try diff. medical tapes to find one that works w. your skin. shhh--don't tell the pharm co. And yes, you can wear up to 3 at a time in this cost effective manner.