I also had deficient in vitamin B 12 and have Neuropathy. I have numbness all over by body there is no feeling anywhere and is been 1 1/2 years ago and the numbness is still there. I took vitamin B12 under the tung how do you spell tongue, tongue, my tongue until it came up to normal. It didn’t work I was to far gone.
I’m sorry I hope it comes back for you.