This is an interesting thread...

Why my B12 numbers are not currently as low as 'Westgrl' I suffer from similar symptoms.

Unlike so many others on this board, I had a negative skin punch biopsy for small fiber neuropathy and in addition to PN-like symptoms in extremities, I also have extremely bizarre neuro symptoms in my spine (buzzing, vibrating, burning/tingling immediately to the left of spine from about C7 to T9) - and with all of this, I have 'normal' MRIs.

I am 42 years old and have been living with this for abour 5.5 years. Symptoms often escalate when taking the common 'cocktail' for PN (Alpha Lipoic/B12/Benfotiamine) yet I do NOT have escalation when just B12 shots - yet no improvement either - perhaps long-term adherence to the supplement will lead to improvement ?

Not sure if I've been of any help, just wanted to share notes.

By the way Westgrl, what is your age? Are you vegetarian and/or consume very little red meat or eggs? Have you had Vitamin D3 tested?

JB