I guess there are many of us interested in this. Just diagnosed with SFPN (small fiber peripheral neuropathy). Some toe, balls of feet numbness, slight burning and the shock thing.

I've ordered the 25mg pirenzepine tablets from an overseas pharmacy and will be trialing this shortly myself.

I'll keep you posted.

Note that a person on reddit did this too and good results. 25mg a day, slight stomach discomfort.