Hi Carol,
I test negative for diabetes, but my body (PN) behaves as if I were. R-Lipoic Acid (RLA) stopped my burning (feet & lower legs) within a couple days. This is unusually quick for this supplement; it can take up to a month or two to work (if it does). RLA is also helpful for Burning Mouth Syndrome (BMS).
r lipoic acid for peripheral neuropathy
r lipoic acid for burning mouth syndrome
If it can't hurt to try it, then it can't hurt to try it.
Doc