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B-Complex

product on market Tablet or Pill 21st Century Safety: 95/100
95/100

This product looks safe

  • Folate: 667mg is 667.0× the Tolerable Upper Intake Level (1.0mg)
  • 86% of ingredients have research evidence
C Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

The B-complex blend contains essential vitamins that support energy metabolism and neurological function. Strong evidence supports the role of thiamine, riboflavin, and folate in cellular health and red blood cell formation. These ingredients are generally well-tolerated with a high safety profile.

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

Alerts

Safety Alerts

Folate: 667mg is 667.0× the Tolerable Upper Intake Level (1.0mg)

Label

Product Label

Label for B-Complex
Open Full PDF View on NIH DSLD →
Details

Label Data

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

Supplement Facts — Evidence Check

1.5 mg (130% DV)
1.2× RDA — within safe limits 76 studies (A:0, B:33)
1.7 mg (130% DV)
1.3× RDA — within safe limits 13 studies (A:0, B:1)
20 mg (130% DV)
1.4× RDA — within safe limits 196 studies (A:5, B:63)
2 mg (120% DV)
1.5× RDA — within safe limits 114 studies (A:3, B:35)
667 mcg DFE (170% DV)
Exceeds UL by 667.0× (UL: 1.0 mg) 226 studies (A:10, B:105)
6 mcg (250% DV)
2.5× RDA — within safe limits 139 studies (A:1, B:44)
Calcium
125 mg (10% DV)

Other Ingredients

Cellulose Stearic Acid Croscarmellose Sodium Contains Less Than 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. 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 Sugar, Yeast, Preservatives, Artificial Flavors or Colors.

Gluten free

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

Additional Information

Individual results may vary.

Store at room temperature.

Energy Support

Gluten free

Guaranteed quality Laboratory tested

Metadata

Product Details

UPC / SKU7 40985 27432 3
DSLD Entry Date2019-10-23
Product TypeOther Combinations
FormTablet or Pill
Brand21st Century
DSLD ID207486
Data Updated2026-04-11
Research

Research Evidence

100
Research Sources
56
Avg Quality
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
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
View all evidence for Thiamine →
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.