ingestible · for nerve pain & neuropathy
Methylcobalamin (Active Vitamin B12)
Reviewed by the Nimbera editorial team · Last updated May 2026
How to use
A typical dose is 1,000 mcg (1 mg) of methylcobalamin daily, often as a sublingual tablet for better absorption, taken for at least 3-12 months. It is most useful for people with low or borderline B12 levels, including those on long-term metformin, which depletes B12. Ask your doctor to check your B12 level first.
How it works
Methylcobalamin is the active, nerve-ready form of vitamin B12 essential for building the myelin sheath that insulates nerves and for healthy nerve cell metabolism. Correcting a deficiency supports nerve repair and can improve conduction, pain, and numbness caused or worsened by low B12.
Where to buy
Available at all pharmacies and supplement retailers. Example brands: Jarrow Formulas Methyl B-12, NOW Foods Methyl B-12, Nature Made B12.
Typical cost: $5-$15 per month
Safety notes
Very safe with a wide margin, as excess water-soluble B12 is excreted. Do not use B12 to self-treat unexplained neuropathy without ruling out other causes, and note that high-dose B12 can mask certain blood test abnormalities. People with a history of Leber's disease or cobalt allergy should avoid it. Consult your doctor to confirm deficiency and appropriate dosing.
Drug & supplement interactions
- Always tell your doctor or pharmacist about any supplements you take.
- Interactions can occur with prescription medications, blood thinners, and immunosuppressants.
- Herbal remedies can affect how the body absorbs or metabolises drugs.
- Check drugs.com interactions checker before starting.
Clinical source
PubMed - Didangelos et al. 2021This information is compiled from primary clinical literature and is for informational purposes only. It is not a substitute for professional medical advice. Read our full disclaimer.