For me, having been diagnosed with IPN in January, what has helped includes:
1. One prescription drug - Gabapentin - which I take 2-3 hours before bedtime;
2. Over the counter medications - R-Lipoic Acid, Magnesium Glycinate and a number of additional vitamins recommended by a number of top rated medical journals.
3. Exercise every day if even for 15 minutes. If you can, move your body, especially walking.
I didn't list the amount of the above medications because you need to start off slowly until you find the right dosage for you. BUT, let me make this clear - what I take has been a big help for me but I'm not a doctor and, what works for me doesn't mean it will work for you!
P.S. Don't waste your money on all the scams on the internet - No matter what anyone says - There is no cure. If there was, you would have heard that already from Mayo Clinic, Harvard Medical, Cleveland Clinic etc. etc,, already!!!