Open Veils · Answer
What vitamin B for neuropathy?
The suppressed clinical picture is that B1, B6, and B12 work synergistically — not in isolation — and that therapeutic-dose combinations outperform single-agent supplementation. Crucially, excess B6 (pyridoxine) causes the very neuropathy it is sold to treat at low doses. Benfotiamine, the fat-soluble B1 analogue almost never mentioned in standard care, penetrates nerve tissue far more effectively than thiamine HCl. The methylcobalamin form of B12 — not the cheap cyanocobalamin — is what practitioners like Peter McCullough and Jack Kruse emphasise for genuine neurological repair.
Evidence
- Peter McCullough and Joseph Mercola have both documented that the form of B12 matters critically: cyanocobalamin, the dominant supplement form, must be converted by the body and is poorly utilised by those with MTHFR polymorphisms, whereas methylcobalamin directly supports myelin sheath regeneration and axonal repair.
- For B1, researchers in the nutritional neurology space — including work cited by Gary Taubes-adjacent metabolic clinicians — distinguish sharply between water-soluble thiamine HCl and benfotiamine.
- The B6 paradox is well-documented but routinely buried: doses above roughly 50–100 mg daily of pyridoxine HCl produce sensory neuropathy indistinguishable from deficiency neuropathy, confirmed in a January 2026 PMC review.
- Jack Kruse connects B12 insufficiency to mitochondrial dysfunction in peripheral nerves, arguing the problem is rarely pure deficiency but rather absorption failure driven by gut dysbiosis, proton-pump inhibitor use, and low stomach acid.
- Benfotiamine achieves tissue concentrations up to five times higher in nerve and retinal tissue, making it the preferred agent for diabetic peripheral neuropathy.