Community observations, not medical advice.Always speak with a qualified healthcare professional.
supplement × General Health

Vitamin B12 for Fatigue

Water-soluble vitamin required for red blood cell formation, myelin synthesis, and DNA production; deficiency, common in older adults and vegans, causes fatigue and neurological symptoms that supplementation corrects.

-published research: study records
-published research: findings
Not formally gradedcertainty of the research
On this pageOverviewEvidenceCommunity outcomesRelated
Why Vitamin B12 for Fatigue?

The connection

Chronic tiredness, low energy, and exhaustion not explained by other medical conditions.

Also known as: Methylcobalamin, Cyanocobalamin

Published research

Vitamin B12 × Fatigue: at a glance

Every published result for this pair, extracted and audited.

Published research

Vitamin B12 / Fatigue: publication years

What this means: Counts describe research quantity, not treatment effectiveness or certainty.

Vitamin B12 / Fatigue: publication years (publications, count)
CategoryPublications (count)
20241
20255
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Published research

Vitamin B12 × Fatigue: the evidence base

Hand-selected PubMed studies, linked to the originals.

6studies referenced
6journals
2024–2025publication range

Ordered by strength of evidence, then result direction.

01Differences in Ferritin, Vitamin D, and Vitamin B12 Between Fibromyalgia Patients and Healthy Individuals: A Systematic Review and Meta-AnalysisIsmail O, et al. · Musculoskeletal care · 2025PMID 39832803 ↗02Dietary Supplementation for Fatigue Symptoms in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS)-A Systematic ReviewDorczok MC, et al. · Nutrients · 2025PMID 39940333 ↗03Associations between Diet and Cognitive Function in Stroke Survivors: A Systematic Review and Meta-analysisAmanat S, et al. · Advances in nutrition (Bethesda, Md.) · 2025PMID 40355028 ↗04Role of vitamin D as adjuvant therapy on multiple sclerosis: an updated systematic review and meta-analysis of randomized controlled trialsSerag I, et al. · European journal of medical research · 2025PMID 40797337 ↗05Psychiatric and cognitive outcomes of iron supplementation in non-anemic children, adolescents, and menstruating adults: A meta-analysis and systematic reviewFiani D, et al. · Neuroscience and biobehavioral reviews · 2025PMID 40945632 ↗06Coenzyme Q10 supplementation in rheumatic diseases: A systematic reviewFreire de Carvalho J, et al. · Clinical nutrition ESPEN · 2024PMID 38220408 ↗
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Community experiences

Contributors volunteered; this does not establish treatment effectiveness or population incidence.

Reported changes

No publishable community breakdown is available. This does not establish that no reports exist.

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Important: This page reflects observational, aggregate-only community reporting and independent published research. It is not medical advice, and it does not claim any compound treats, cures, or is effective for any condition. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or treatment.