B Complex

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

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 86% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

1 Tablet(s) Serving Size
Other Combinations Product Type
86% Evidence Coverage

Supplement Facts — Evidence Check

1.5 mg (100% DV)
✅ 1.2× RDA — within safe limits 📚 76 studies (Tier A: 0, B: 33)
RDA 1.2mg This product: 1.5mg
1.7 mg (100% DV)
✅ 1.3× RDA — within safe limits 📚 12 studies (Tier A: 0, B: 1)
RDA 1.3mg This product: 1.7mg
20 mg (100% DV)
✅ 1.4× RDA — within safe limits 📚 193 studies (Tier A: 5, B: 63)
RDA 14mg This product: 20mg UL 35mg
2 mg (100% DV)
✅ 1.5× RDA — within safe limits 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 2mg UL 100mg
400 mcg (100% DV)
✅ Within RDA (1.0× RDA of 0.4 mg) 📚 225 studies (Tier A: 10, B: 105)
RDA 0.4mg This product: 0.4mg UL 1.0mg
6 mcg (100% DV)
✅ 2.5× RDA — within safe limits 📚 138 studies (Tier A: 1, B: 44)
RDA 0.0024mg This product: 0.006mg
Calcium
125 mg (13% DV)

Other Ingredients

Cellulose Stearic Acid Croscarmellose Sodium Silicon Dioxide Magnesium Stearate Polyvinyl Alcohol Talc PEG Polysorbate

Label Claims — Verification

❓ All Other
❓ Structure/Function
All Other (99% of products) Structure/Function (83% of products) Nutrient (47% of products)

Target Groups

Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Directions: As a vitamin supplement, take one (1) tablet daily with any meal or as directed by your healthcare provider. Do not exceed recommended dosage. Individual results may vary.

⚠️ Warnings & Precautions

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 Sugar, Yeast, Preservatives, Artificial Flavors or Colors.

Additional Information

B vitamins are interdependent upon each other and interrelated in function. They convert food into energy and help maintain the nervous system and body tissues.

Store at room temperature.

LABORATORY TESTED GUARANTEED QUALITY

501012-0215R1

Helps Convert Food into Energy and Helps Maintain the Nervous System

Product Details

UPC / SKU 7 40985 27432 3
DSLD Entry Date 2015-03-25
Product Type Other Combinations
Form Tablet or Pill
Brand 21st Century
DSLD ID 43794
Data Updated 2026-04-11

Research Evidence

100 Research Sources
56 Avg Quality Score
48 Systematic Review
30 Meta Analysis
13 Rct
6 Clinical Trial
1 Cochrane Review
1 Regulatory Source
B Thiamine for prevention and treatment of Wernicke-Korsakoff Syndrome in people who abuse alcohol
Systematic Review The Cochrane database of systematic reviews 2013
PubMed DOI Cochrane
B Efficacy of B-vitamins and vitamin D therapy in improving depressive and anxiety disorders: a systematic review of randomized controlled trials
Systematic Review Nutritional neuroscience 2023
PubMed DOI
B Effect of thiamine supplementation on glycaemic outcomes in adults with type 2 diabetes: a systematic review and meta-analysis
Meta Analysis BMJ open 2022
PubMed DOI
B Effect of intravenous thiamine administration on critically ill patients: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Clinical nutrition (Edinburgh, Scotland) 2024
PubMed DOI
B Effect of adjunctive vitamin C, glucocorticoids, and vitamin B1 on longer-term mortality in adults with sepsis or septic shock: a systematic review and a component network meta-analysis
Systematic Review Intensive care medicine 2022
PubMed DOI
B Effect of Combined Diclofenac and B Vitamins (Thiamine, Pyridoxine, and Cyanocobalamin) for Low Back Pain Management: Systematic Review and Meta-analysis
Meta Analysis Pain medicine (Malden, Mass.) 2020
PubMed DOI
B Thiamine, Ascorbic Acid, and Hydrocortisone As a Metabolic Resuscitation Cocktail in Sepsis: A Meta-Analysis of Randomized Controlled Trials With Trial Sequential Analysis
Meta Analysis Critical care medicine 2021
PubMed DOI
B The effects of thiamine supplementation on patients with heart failure: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Complementary therapies in medicine 2022
PubMed DOI
B Hydrocortisone Combined with Vitamin C and Thiamine in the Treatment of Sepsis/Septic Shock: A Systematic Review with Meta-Analysis and Trial Sequential Analysis
Meta Analysis Clinical and investigative medicine. Medecine clinique et experimentale 2023
PubMed DOI
B Thiamine for Wernicke-Korsakoff Syndrome in people at risk from alcohol abuse
Systematic Review The Cochrane database of systematic reviews 2004
PubMed Cochrane
View all evidence for Thiamine →

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