Vitamin B Dual-Action by Nutrilite — Ingredients, Evidence & Safety

🟢 96/100

This product looks safe

Folate: 667mg is 667.0× the Tolerable Upper Intake Level (1.0mg)
78% of ingredients have research evidence

C Label Compliance Grade

Product Label

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Safety Alerts

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

Label Data

1 Tablet(s) Serving Size

30 Servings

Botanical with Nutrients Product Type

78% Evidence Coverage

Supplement Facts — Evidence Check

Thiamine

3 mg (250% DV)

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

RDA 1.2mg This product: 3mg

Riboflavin

3.4 mg (261% DV)

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

RDA 1.3mg This product: 3.4mg

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

4 mg (235% DV)

📊 3.1× RDA — above typical dose (UL: 100 mg) 📚 113 studies (Tier A: 3, B: 35)

RDA 1.3mg This product: 4mg UL 100mg

Folate

667 mcg DFE (167% DV)

⚠️ Exceeds Tolerable Upper Intake Level by 667.0× (UL: 1.0 mg) 📚 225 studies (Tier A: 10, B: 105)

RDA 0.4mg This product: 667mg UL 1.0mg

Vitamin B12

6 mg (250% DV)

📊 2500.0× RDA — above typical dose 📚 138 studies (Tier A: 1, B: 44)

RDA 0.0024mg This product: 6mg

Biotin

125 mg (417% DV)

📊 4166.7× RDA — above typical dose 📚 26 studies (Tier A: 0, B: 11)

RDA 0.03mg This product: 125mg

Pantothenic Acid

20 mg (400% DV)

📊 4.0× RDA — above typical dose 📚 1 studies — no high-quality reviews

RDA 5mg This product: 20mg

Spirulina, Powder

75 mg

📊 Market median: 200.0mg (107 products)

Median 200.0mg This product: 75mg

Other Ingredients

Microcrystalline Cellulose Yeast, Dried Lactose Hydroxypropyl Methylcellulose Croscarmellose Sodium Magnesium Stearate Silicon Dioxide Glycerol Carnauba Wax

Label Claims — Verification

❓ Nutrient

❓ All Other

❓ Structure/Function

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

Target Groups

Children 4 or More Years of Age Adult (18 - 50 Years) Kosher Halal Gluten Free

Product Information

📋 Directions for Use

Suggested use: Take 1 tablet daily, preferably with a meal.

1 tablet, 1x a day

⚠️ Warnings & Precautions

Children under 12 years of age, pregnant women or nursing mothers, or anyone with a medical condition should consult with a physician before taking this product. Keep out of reach of children.

Children under 12 years of age, pregnant women or nursing mothers, or anyone with a medical condition should consult with a physician before taking this product.

Bottle sealed under cap for your protection.

Exclusively from Amway

🧪 Formulation Notes

Nutrilite Vitamin B Dual-Action provides spirulina and is packed with all eight essential B vitamins used by the body to produce energy and help fight fatigue. Natural spirulina is a nutrient rich, blue-green algae grown and harvested on Nutricert certified aqua-farms.

Just one dual-action tablet combines both extended release and instant release technologies.

Gluten free

Crescent M (Halal)

Star-D Kosher Dairy

Made in USA

B vitamins help fight fatigue

Additional Information

Keep bottle tightly closed after opening. Store in a cool, dry place.

NSF Contents Tested & Certified Crescent M (Halal) Star-D Kosher Dairy

Quality you can trust since 1934

Product Details

UPC / SKU 8 50210 00836 1

DSLD Entry Date 2025-04-24

Product Type Botanical with Nutrients

Form Tablet or Pill

Brand Nutrilite

DSLD ID 328226

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 →