OP, most definitely I can appreciate your experience. The following is Not intended as medical advice. Check any related documentation available for your best usage. Use good common sense. Your mileage may vary. My experience is as a senior citizen of nearly 300 pounds in relatively good health.

I sincerely believe that my regular usage of NAC has helped with my neuropathy but that's just my own experience. I was able to find NAC at my health-food store. 600mg capsules. One in the morning and one before bed.

AND:

Magnesium - in caplet form - from Wally-World. 500 mg caplets (or capsules)

• One (or two) before bed (if that's when your pain ramps up). May cause digestive upset but MUCH more tolerable than the neuropathy. Observe the directions on the bottle and make your own choices. Probably can find this also at your health-food store

Cinnamon - capsules - anytime of the day or night. Again, from Wally-World. Again,

• 500 mg capsules. Not sure you can overdose on Cinnamon but I would be cautious about taking more than four capsules at a time. Observe the directions
  on the bottle and then make your own decisions. Probably depends on your body-mass. Betcha can also find this at your health-food store

Alpha-Lipolic acid - capsules - anytime of the day or night. Sorry to be (again) sending you to Walmart but hey, if that's the only place it's available?

• 200mg capsules. I have taken up to four at a time with no ill-effects. My health-food store did NOT have this. Walmart did. Go figure.

PRAYERS going up for you; I have personal experience with neuropathy and I don't wish it onto anyone. GBY and your loved ones, dear u/AwakeJesusisComing21! He. IS. RISEN!