B Complex by Sundown — Ingredients, Evidence & Safety

Product Label

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Safety Alerts

⚠️ Folate: 666mg is 666.0× the Tolerable Upper Intake Level (1.0mg)

Label Data

1 Tablet(s) Serving Size

Vitamin Product Type

100% Evidence Coverage

Supplement Facts — Evidence Check

Thiamine

1.5 mg (125% DV)

✅ 1.2× RDA — within safe limits 📚 76 studies (Tier A: 0, B: 33)

RDA 1.2mg This product: 1.5mg

Riboflavin

1.7 mg (131% DV)

✅ 1.3× RDA — within safe limits 📚 12 studies (Tier A: 0, B: 1)

RDA 1.3mg This product: 1.7mg

Niacin

20 mg (125% DV)

✅ 1.4× RDA — within safe limits 📚 193 studies (Tier A: 5, B: 63)

RDA 14mg This product: 20mg UL 35mg

Vitamin B6

2 mg (118% DV)

✅ 1.5× RDA — within safe limits 📚 113 studies (Tier A: 3, B: 35)

RDA 1.3mg This product: 2mg UL 100mg

Folate

666 mcg DFE (167% DV)

⚠️ Exceeds Tolerable Upper Intake Level by 666.0× (UL: 1.0 mg) 📚 225 studies (Tier A: 10, B: 105)

RDA 0.4mg This product: 666mg UL 1.0mg

Vitamin B12

6 mcg (250% DV)

✅ 2.5× RDA — within safe limits 📚 138 studies (Tier A: 1, B: 44)

RDA 0.0024mg This product: 0.006mg

Other Ingredients

Calcium Carbonate Vegetable Cellulose Contains Less Than 2% Of

Label Claims — Verification

❓ Nutrient

❓ All Other

❓ Structure/Function

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

Target Groups

Vegetarian Adult (18 - 50 Years) Gluten Free Dairy Free Sugar Free

Product Information

📋 Directions for Use

Directions: For adults, take one (1) tablet daily, preferably with a meal. As a reminder, discuss the supplements and medications you take with your health care providers.

⚠️ Warnings & Precautions

Keep out of reach of children.

Tamper Resistant: Do not use if seal under cap is broken or missing.

Warning: If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use.

Discontinue use and consult your doctor if any adverse reactions occur.

🧪 Formulation Notes

Clean Nutrition Sundown believes in clean nutrition and being transparent. That's why you won't find genetically modified ingredients, gluten, wheat, dairy, lactose or artificial flavors in any of our products. Non-GMO No gluten No wheat No milk No lactose No artificial color No artificial sweetener No sugar No soy No starch No yeast No peanuts No tree nuts No fish Sodium free

B Vitamins aid in the conversion of food into energy

B Complex with 6 essential B Vitamins

For energy support & heart health

Vegetarian

Additional Information

Store at room temperature and avoid excessive heat.

Questions? Call toll free 1-888-VITAHELP (848-2435) or visit us at www.sundownnutrition.com US Only Discard seal & empty before recycling Check locally Plastic bottle how2recycle.info Not recycled in all communities

Product Details

UPC / SKU 0 30768 00601 3

DSLD Entry Date 2019-12-22

Product Type Vitamin

Form Tablet or Pill

Brand Sundown

DSLD ID 212418

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 →