As per my telephone conversation this morning with The Neuropathy Association at 1-800-247-6968, the only vitamin he mentioned that have been known to cause neuropathy were B6 in mega doses, and a dificiency in B12 is also known to cause neuorpathy. My son has a B12, folic acid difficency. I am also going to call the vitamin company itself for further info.

Have you tried any of the Kirkman products? They are designed specifically for children with autism. I have used many of their products in the past. They have a high does B-6 and magnesium formula called Super-Nu Thera that comes in a small easy to swallow capsule of liquid. I have been very please with their products. They are on line at kirkmanlabs.com. Just a suggestion