Have any of you tried benfotiamine? It's a form of B-1 that's available in the United States now. They've been using it in Japan for neuropathy pain for years. I know it's available from iHerb and Amazon, and I got a great deal of relief when I first tried it. I now use it twice a day, 150 mg each time. The brand I order is Doctors Best from iHerb.