Taken from your site:
"There are currently no treatments to help reverse diabetic neuropathy. There are no treatments which help reduce the numbness. But, there are many treatments to help decrease the pain associated with the neuropathy".
I'm not sure what is meant by "treatments". If I had Neuropathy(and I did at one point), I would do my Best to get my sugars under control. That is the Best "treatment". Drugs just cover the pain in these cases and I would think that a Person would have to keep increasing the dose or try a stronger/different drug since they may become resistant to the drug.
If the Neuropathy is past the reversal stage(no one can say exactly when that is since People are Amazingly different and often resilient)then certainly there is no choice but to use these types of drugs.