[QUOTE=brianpain33;3369555]They can be used for various types of pain. But of course everyone is different and they may help one person and do nothing for someone else. Apply LIDODERM to intact skin to cover the most painful area. [SIZE="4"]Apply up to three patches, only once for up to 12 hours within a 24-hour period. You can actually get an overdose of the anesthetic in your body if you don't follow these instructions. Bad things can happen like slowed heart rate, low blood pressure, passing out, etc.
That's all the advice that I have for you.
I'll just add to the above post my own experience:
I use the Lidoderm patches for back pain (I usually cut them in half and apply on the most painful areas). One night I forgot to take them off (1 patch cut in half) before I went to bed and while I was exercising the next morning I kept getting really light-headed to the point of feeling like I might pass out. I didn't faint, but did remember then that I hadn't removed the patch (it had been on for about 18 hours). If I had applied more than one, I think I probably would have passed out.
It made me realize these patches are pretty powerful. It does help my pain...I'm very glad about that(!) but I am not much more conscious of removing them after 12 hours.