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B-Complex

product on market Capsule Nested Naturals Safety: 92/100
92/100

This product looks safe

  • Niacin: 50mg is 1.4× the Tolerable Upper Intake Level (35mg)
  • Folate: 680mg is 680.0× the Tolerable Upper Intake Level (1.0mg)
  • 90% of ingredients have research evidence
D Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

This B-complex contains essential vitamins like thiamine, riboflavin, and folate that support cellular energy metabolism and neurological function. There is strong evidence for the role of these nutrients in maintaining metabolic health. The profile maintains a high safety score of 92/100.

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

Alerts

Safety Alerts

Niacin: 50mg is 1.4× the Tolerable Upper Intake Level (35mg)

Folate: 680mg is 680.0× 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 Vegan Capsule(s)
Serving Size
60
Servings
Other Combinations
Product Type
90%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

50 mg (4167% DV)
41.7× RDA — above typical dose 76 studies (A:0, B:33)
50 mg (3846% DV)
38.5× RDA — above typical dose 13 studies (A:0, B:1)
50 mg (313% DV)
Exceeds UL by 1.4× (UL: 35 mg) 196 studies (A:5, B:63)
50 mcg (2941% DV)
Market median: 10.0mg (1576 products) 114 studies (A:3, B:35)
680 mcg DFE (170% DV)
Exceeds UL by 680.0× (UL: 1.0 mg) 226 studies (A:10, B:105)
50 mcg (2083% DV)
20.8× RDA — above typical dose 139 studies (A:1, B:44)
50 mcg (167% DV)
1.7× RDA — within safe limits 27 studies (A:0, B:11)
50 mcg (1000% DV)
Market median: 9.0mg (620 products) 2 studies — no high-quality reviews
50 mg
Market median: 550.0mg (217 products) 29 studies (A:0, B:5)
50 mg (9% DV)
Within RDA (0.1× RDA) 38 studies (A:1, B:7)

Other Ingredients

Rice Flour Vegetable Cellulose
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested use: Take 1 vegan capsule daily with water as needed.

Warnings & Precautions

Warning: Use only as directed.

Consult your physician before use if you are pregnant or nursing, have a serious medical condition, or use prescription medications.

Keep out of reach of children.

Food supplements are not a substitute for a varied diet.

Do not use if safety seal is broken.

Formulation Notes

Nested Naturals B-Complex provides all 8 B-vitamins along with their close cousins choline and inositol for added support. B-vitamins play a role in covering food to fuel to promote a healthy metabolism. B-vitamins are involved in metabolism, helping you produce the energy you need to power through your day.

Supports the normal function of serotonin and dopamine, promoting positive mood. Helps to promote a healthy response to occasional stress.

B-Vitamins + Choline + Inositol

Energy Mood Stress

Vegan

Non GMO

Allergies? We have you covered. This product contains no wheat, gluten, GMO, soy, dairy, egg, corn, fish, shellfish, nuts, tree nuts, yeast, barley, or added sugar. Gluten free

Additional Information

Get your next bottle free nestednaturals.com/free One use per customer

3rd Party Verified for Purity & Potency Lab tested

Lifetime guarantee

Store in a cool, dry place. Avoid excessive heat.

Made with love

Metadata

Product Details

UPC / SKUX001GN7VPD
DSLD Entry Date2023-06-22
Product TypeOther Combinations
FormCapsule
BrandNested Naturals
DSLD ID286808
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.