I have PN in my left foot, ankle and calf. Quite severe at times to where I can't walk. Those two narcotics, I switch around. If the pain is less, I take less etc.
I really like this compound I have which has Ketamine in it, along with 4 other ingredients. I also use Lidoderm patches, as there is more wrong with my ankle than just the PN. B12 shots, I know they helped over the course of a year.

Does your BP run low to begin with? I am surprised that the percocet lowers your BP so much. I don't know what other med. besides what we have talked about would help you. If you are not getting any relief from a lower dose. you need to get back to your doctor. There has to be something else that can help that won't lower your BP like that.
I can list the ingredients for the compound I have if you would like.
What kind of doctor do you see for the SFN? Has there been anything at all offered to you besides what you have? Keep in touch Marie, none of this is fun.....ginnie