Home/ Supplements/ Vitamin B12/ B-12 2500 mcg

B-12 2500 mcg

product on market Tablet or Pill 21st Century Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 100% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · grounded in 1 source · methodology

Vitamin B12 is essential for nerve function and the production of red blood cells. There is strong evidence supporting its role in preventing megaloblastic anemia and supporting cognitive health. This high-dose formulation provides a significant amount of the daily requirement for these biological processes.

AI-generated summary based on research evidence. Not medical advice.

Label

Product Label

Label for B-12 2500 mcg
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Tablet(s)
Serving Size
Vitamin
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

2500 mcg (104167% DV)
1041.7× RDA — above typical dose 139 studies (A:1, B:44)

Other Ingredients

Sucrose Mannitol Polyplasdone Crospovidone Hydroxypropyl Methylcellulose Contains <2% of
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions: As a vitamin supplement, adults take one (1) tablet daily with any meal or as directed by a healthcare provider. Place under tongue for 30 seconds before swallowing. Do not exceed recommended dosage.

Warnings & Precautions

Do not exceed recommended dosage.

Warning: Consult a healthcare provider prior to use if pregnant, nursing, on medications, have a medical condition or are planning a medical procedure.

Stop use and contact a physician if adverse reactions occur.

Keep out of reach of children.

Do not use if product appears to be tampered with or seal is broken.

Formulation Notes

No added Salt, Yeast, Preservatives, Artificial Flavors or Colors.

Gluten free

Vitamin B-12 (Cyanocobalamin) supports the body's nerves and blood cells. Quick dissolve Vitamin B-12 is a great tasting way to deliver your B vitamin.

Additional Information

Individual results may vary.

Store at room temperature.

Quick dissolve Energy Support

Gluten free

Guaranteed quality Laboratory tested

Metadata

Product Details

UPC / SKU7 40985 27112 4
DSLD Entry Date2019-09-24
Product TypeVitamin
FormTablet or Pill
Brand21st Century
DSLD ID206784
Data Updated2026-04-11
Research

Research Evidence

237
Research Sources
53
Avg Quality
83
Meta Analysis
74
Systematic Review
45
Rct
29
Clinical Trial
2
Guideline
2
Regulatory Source
1
Openfda Safety
A Associations between serum Homocysteine, vitamin B9, and vitamin B12 levels and the formation of intracranial Aneurysms: A systematic review and meta-analysis
Meta Analysis Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia 2025 PubMed DOI
A Intake of vitamin B6, folate, and vitamin B12 and risk of coronary heart disease: a systematic review and dose-response meta-analysis of prospective cohort studies
Meta Analysis Critical reviews in food science and nutrition 2019 PubMed DOI
A Oral vitamin B12 versus intramuscular vitamin B12 for vitamin B12 deficiency
Systematic Review The Cochrane database of systematic reviews 2018 PubMed DOI
A Effects of Vitamin B12 Supplementation on Cognitive Function, Depressive Symptoms, and Fatigue: A Systematic Review, Meta-Analysis, and Meta-Regression
Meta Analysis Nutrients 2021 PubMed DOI
A Efficacy of different routes of vitamin B12 supplementation for the treatment of patients with vitamin B12 deficiency: A systematic review and network meta-analysis
Systematic Review Irish journal of medical science 2024 PubMed DOI
B Helicobacter pylori infection and micronutrient deficiency in pregnant women: a systematic review and meta-analysis
Meta Analysis BMJ open gastroenterology 2020 PubMed DOI
B Vitamin B12 supplementation during pregnancy for maternal and child health outcomes
Systematic Review The Cochrane database of systematic reviews 2024 PubMed DOI
B A comprehensive review and meta-regression analysis of randomized controlled trials examining the impact of vitamin B12 supplementation on homocysteine levels
Meta Analysis Nutrition reviews 2024 PubMed DOI
B Relationship between vitamin B12 levels and motor development: A systematic review
Systematic Review Clinical nutrition ESPEN 2024 PubMed DOI
B Vitamin B12, folate, and homocysteine in metabolic syndrome: a systematic review and meta-analysis
Meta Analysis Frontiers in endocrinology 2023 PubMed DOI
View all evidence for Vitamin B12 →
Compare

Similar Products

B-12 100 mcg
Vitamin World · Tablet or Pill
100
B-12 500 mcg
Vitamin World · Tablet or Pill
100
High Potency B12 250 mcg
Sundown Naturals · Tablet or Pill
100
High Potency 500 mcg Vitamin B-12
Equaline · Tablet or Pill
100
Vitamin B12 100 mcg
Sunmark · Tablet or Pill
100
View all Vitamin B12 products →
Vitamin B12 research Best Vitamin B12 All Vitamin B12 products More from 21st Century View on NIH DSLD →

This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.