B-12 500 mcg®
Single Vitamin & MineralBrand: 21st Century
Functions
Net Contents
110 Tablet(s)
Serving Size
1 Tablet(s)
Servings Per Container
Not specified
Supplement Form
Tablet or Pill
Bar Code (UPC/SKU)
7 40985 22309 3
Product Version
500301-1018N
Label Analysis
Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.
2 distinct active ingredients are disclosed in Supplement Facts.
Every active ingredient discloses a specific amount per serving.
2 ingredients report a %DV; 1 meet or exceed 100% DV.
Label states: Gluten-Free.
This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.
Allergen Guide
Free From
- Gluten
Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.
Supplement Facts
Serving Size: 1 Tablet(s) · 1 per day
| Ingredient | Amount Per Serving | % Daily Value |
|---|---|---|
| Vitamin B12(Cyanocobalamin) | 500 mcg | 20833% |
| Calcium(Calcium Carbonate) | 100 mg | 8% |
Not Present
Other Ingredients
Target Groups
Label Claims
Directions & Suggested Use
Suggested/Recommended/Usage/Directions
Directions: As a vitamin supplement, adults take one (1) tablet daily with any meal or as directed by a healthcare provider. Do not exceed recommended dosage.
Warnings & Precautions
Precautions re: All Other
Do not exceed recommended dosage.
Precautions re: Pregnant or Nursing or Prescription Medications
Warning: Consult a healthcare provider prior to use if pregnant, nursing, on medications, have a medical condition or are planning a medical procedure.
Precautions re: All Other
Stop use and contact a physician if adverse reactions occur.
Precautions re: Children
Keep out of reach of children.
Precautions re: All Other
Do not use if product appears to be tampered with or seal is broken.
Storage
Storage
Store at room temperature.
Formulation
Formulation re: Does NOT Contain
No added Sugar, Yeast, Preservatives, Artificial Flavors or Colors.
Formulation re: Does NOT Contain
Gluten free
Formula re: Contains
Vitamin B-12 (Cyanocobalamin) supports the body's nerves and blood cells.
FDA Statements
FDA Disclaimer Statement
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
FDA Statement of Identity
Vitamin Supplement
Other Label Statements
General Statements: All Other Content
Individual results may vary.
General Statements: All Other Content
Energy Support
Seals/Symbols
Gluten free
Seals/Symbols
Guaranteed quality Laboratory tested
Manufacturer & Distributor
Manufacturer
21st Century HealthCare, Inc.
2119 S. Wilson St., Tempe, AZ, 85282, USA
Market Reference
21st Century B-12 mcg
iHerb4.7(6900)$5.49Pack of 12-B12 500Mcg Tab 21St Cent Tab 500Mcg 110 By 21st Century USA
AmericanPharmaWholesale.com$44.7921st Century Sublingual Vitamin B-12 5000 mcg Tablets
Walmart4.7(642)$16.1321st Century Vitamin B-12 2500 mcg Tablets
Walmart4.7(1700)$11.9921st Century B-12 500 mcg 110 Tablets
GoSupps.com4.7(6900)$44.99B12 500mcg Tab 110ct 21st Century
eBay - volfan37415$21.3421st Century B-12 500 mcg Tablets 110-Count (Pack of 2)
GoSupps.com4.7(6900)$34.9921st Century Quick Dissolve B-12 30 Tablets
eBay - 2016more4less4.7(642)$29.99
Where to Buy Locally
Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.
Showing representative supplement & health retailers — search above for stores in your area.
ITL Health
5.0 (37)Vitamin & Supplements Shop
50 Broadway, London SW1H 0BL
Prodentim
5.0 (1)Vitamin & Supplements Shop
72 Regent St., London W1B 4EN
Nutriburst
4.6 (30)Manufacturer
8 Waterloo Pl, London SW1Y 4BN
Protiv Nutrition
5.0 (1)Vitamin & Supplements Shop
3rd Floor, 207 Regent St., London W1B 3HH
Holland & Barrett - Maddox Street
4.3 (52)Vitamin & Supplements Shop
6-8 Maddox St, London W1S 1NR
Arbor Vitamins
5.0 (13)Vitamin & Supplements Shop
128 City Rd, London EC1V 2NX
Minerva Wellness
5.0 (21)Vitamin & Supplements Shop
71-75 Shelton St, London WC2H 9JQ
Nayble Health & Sports
5.0 (139)Vitamin & Supplements Shop
18 Chamberlayne Rd, London NW10 3JD
Research & Studies
Revisiting vitamin B12 deficiency: A clinician's guide for the 21st century
BJ Wentworth, AP Copland - Pract Gastroenterol, 2018 - practicalgastro.com
… Vitamin B12 (cobalamin) deficiency is a common disorder encountered across various medical … , and summarizes the available nutritional and medical literature regarding management. …
201813 citationsRecent advances in dietary sources, health benefits, emerging encapsulation methods, food fortification, and new sensor-based monitoring of vitamin B12: a …
SMT Gharibzahedi, M Moghadam, J Amft, A Tolun… - Molecules, 2023 - mdpi.com
… mechanism, bioavailability assay, health advantages, cutting-… -based detection methods of vitamin B 12 (VB 12 ) were … supplements vary in dosage, ranging from a few micrograms …
202354 citationsVitamin B12 in Foods, Food Supplements, and Medicines—A Review of Its Role and Properties with a Focus on Its Stability
Ž Temova Rakuša, R Roškar, N Hickey, S Geremia - Molecules, 2022 - mdpi.com
… storage affect B 12 stability in foods, food supplements, and … content-related quality of vitamin B 12 products on the market. … Vitamin B 12 deficiency is an important public health issue, …
2022160 citationsComparative bioavailability and utilization of particular forms of B12 supplements with potential to mitigate B12-related genetic polymorphisms
C Paul, DM Brady - Integrative Medicine: A Clinician's Journal, 2017 - pmc.ncbi.nlm.nih.gov
… However, a 2010 study assessed B 12 status versus B 12 … vitamin B 12 /d is associated with an adequate vitamin B 12 status… in a healthy population between 18 and 50 years of age.”16 …
2017157 citationsAn Overview on Prevalence of Vitamin B12 Deficiency and Approaches for its Management.
M Rastogi, B Shaida, S Siddiqui - Journal of Scientific & Technical …, 2023 - researchgate.net
… on human health Vitamin B12 … 6 mcg CN-Cbl administered subjects. The mean increase in holoTC was 2.8 times higher in 9 mcg CN-Cbl administered subjects in comparison to 9 mcg …
2023Vitamin B12
HRLMS ChE - Archives of Internal Medicine, 2002 - godfire.net
… 100-200 microgram of the cyanocobalamin form of B-12. This … a B-12 deficiency, was found in 23% of the healthy elderly … The addition of vitamin B-12 to folic acid supplements also …
200226 citations
Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2019-08-23. DSLD Label ID: 205866. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.
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