Home/Ingredients/Methyl-B12
VITAMINS

Methyl-B12

Energy · nerves · cognition

VERY STRONG EVIDENCEVEGANCORE INGREDIENTREAD THE RESEARCH
Written to our editorial standards · reviewed against published research· Updated 2 Jun 2026
Last reviewed: May 30, 2026
QUICK ANSWER

Methyl-B12: Energy · nerves · cognition. Essential for energy production and red blood cell formation. Plant-based diets need it, period. Standard dose 1000 mcg, taken in the morning, about $10/month. Evidence rating: very strong evidence.

What is Methyl-B12?

Vitamin B12 (methylcobalamin) is essential for red blood cell formation, DNA synthesis, and the protective myelin sheath around nerves. Unlike most vitamins, B12 is produced exclusively by microorganisms and accumulates in animal foods, making vegans and vegetarians universally at risk of deficiency. Older adults are also at risk because stomach acid declines with age, impairing B12 absorption from food. Symptoms of deficiency include fatigue, brain fog, tingling in the hands and feet, and mood changes. Methylcobalamin is the active form the body uses directly, bypassing the conversion step required of cheaper cyanocobalamin. Standard daily doses are 500-1,000 mcg sublingually or oral.

WHY IT MATTERS

Essential for energy production and red blood cell formation. Plant-based diets need it, period.

Natural food sources

Where possible, get Methyl-B12 from whole foods first. Common dietary sources include:

Beef & liverSalmon & tunaEggsDairyFortified nutritional yeast

Where to buy

Jarrow Formulas Methyl B-12 1000mcg
RECOMMENDED
Jarrow Formulas, Methyl-B12
1000 mcg · Morning · ~$10/month

suppdoc.io is an affiliate. Links may earn us a commission at no extra cost to you.

All product options

Jarrow Formulas Methyl B-12 1000mcgBESTSELLER
Methyl B-12 1000mcg
Jarrow Formulas
100 lozenges · $12 · ★ 4.8
Buy on iHerb →Buy on Amazon →
Garden of Life mykind Organics B-12 SprayEDITOR'S PICK
mykind Organics B-12 Spray
Garden of Life
58 ml · $16 · ★ 4.7
Buy on iHerb →Buy on Amazon →
Thorne Methylcobalamin B12PREMIUM
Methylcobalamin B12
Thorne
60 capsules · $22 · ★ 4.8
Buy on iHerb →Buy on Amazon →

Stacks that include Methyl-B12

✿
The Vegan Essentials
Plant-based, perfectly covered.

Best for your goal

Interactions

Related biomarkers

Other vitamins

Vitamin D3 + K2
Energy · bone · immune
Whole-food Multivitamin
Baseline nutrition
B-Complex
Energy · stress · methylation
Vitamin C (Buffered)
Immune · antioxidant · collagen synthesis

Common questions

What is Methyl-B12?
Vitamin B12 (methylcobalamin) is essential for red blood cell formation, DNA synthesis, and the protective myelin sheath around nerves. Unlike most vitamins, B12 is produced exclusively by microorganisms and accumulates in animal foods, making vegans and vegetarians universally at risk of deficiency. Older adults are also at risk because stomach acid declines with age, impairing B12 absorption from food. Symptoms of deficiency include fatigue, brain fog, tingling in the hands and feet, and mood changes. Methylcobalamin is the active form the body uses directly, bypassing the conversion step required of cheaper cyanocobalamin. Standard daily doses are 500-1,000 mcg sublingually or oral.
What is Methyl-B12 used for?
Energy · nerves · cognition. Essential for energy production and red blood cell formation. Plant-based diets need it, period.
What is the standard dose of Methyl-B12?
1000 mcg, typically taken in the morning. Approximate cost is $10 per month.
How strong is the evidence for Methyl-B12?
Very strong evidence for its primary uses. See the full study list on the research page.

Not sure if Methyl-B12 is right for you?

Take our quiz. We'll compose a personalised stack that fits your goals, body, and budget, in minutes.

Take the quiz →