There is one in the works for actually reversing nerve damage. Winsantor pharmaceutical is currently in clinical trials for topical Pirenzepine. They use WST-057 as their identifier. Pirenzepine in tablet form is available in Asia and Europe and has been around since the 1980's. It is used there for ulcers and reflux. People are ordering it from Japan that are from the US and taking it orally. Google all of it. You'll find it.