Went to their web site and all info was 'ambiguous' at best? And the COST? Well, too rich for my blood! Stem cells grow from good nutrition and good body functioning. Not from any supplement - that I know of, nor are there any 'clinical trials' along this vein - believe me, I would find it!
I've had serious PN for 6 years now [] and even the pain pills don't cut it..so I just get along with it ..so to speak.
I doubt that is what you want to hear, for sure.
I WOULD encourage you to pay attention to Mrs D and read her advice regarding vitamins, minerals and other supplements. She speaks as one who has tirelessly researched how these things have helped her and others. Also, don't forget to keep moving! Circulation to affected areas is damaged due to neuropathy and moving helps that circulation.
Now, none of these is an instant 'cure all'. There aren't any 'cures' per-se.
But, there are things we can try to do to help things be less bad and/or tolerable.
Hugs and hope always! 's - j