🟢 97/100

This product looks safe

  • Vitamin B3: 50mg is 1.4× the Tolerable Upper Intake Level (35mg)
  • 82% of ingredients have research evidence
C Label Compliance Grade

Product Label

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Safety Alerts

⚠️ Vitamin B3: 50mg is 1.4× the Tolerable Upper Intake Level (35mg)

Label Data

0.25 tsp Serving Size
220 Servings
Other Combinations Product Type
82% Evidence Coverage

Supplement Facts — Evidence Check

50 mg (3330% DV)
📊 41.7× RDA — above typical dose 📚 76 studies (Tier A: 0, B: 33)
RDA 1.2mg This product: 50mg
50 mg (2950% DV)
📊 38.5× RDA — above typical dose 📚 12 studies (Tier A: 0, B: 1)
RDA 1.3mg This product: 50mg
50 mg (250% DV)
⚠️ Exceeds Tolerable Upper Intake Level by 1.4× (UL: 35 mg) 📚 193 studies (Tier A: 5, B: 63)
RDA 14mg This product: 50mg UL 35mg
50 mg (2500% DV)
📊 38.5× RDA — above typical dose (UL: 100 mg) 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 50mg UL 100mg
50 mcg (850% DV)
📊 20.8× RDA — above typical dose 📚 138 studies (Tier A: 1, B: 44)
RDA 0.0024mg This product: 0.05mg
100 mcg (30% DV)
📊 3.3× RDA — above typical dose 📚 26 studies (Tier A: 0, B: 11)
RDA 0.03mg This product: 0.1mg
100 mcg (25% DV)
✅ Within RDA (0.2× RDA of 0.4 mg) 📚 225 studies (Tier A: 10, B: 105)
RDA 0.4mg This product: 0.1mg UL 1.0mg
50 mg (500% DV)
📊 10.0× RDA — above typical dose 📚 1 studies — no high-quality reviews
RDA 5mg This product: 50mg
50 mg
📊 Market median: 500.0mg (9 products)
This product: 50mg
50 mg
✅ Within RDA (0.1× RDA of 550 mg) 📚 36 studies (Tier A: 1, B: 7)
RDA 550mg This product: 50mg UL 3500mg
50 mg
📊 Market median: 550.0mg (217 products) 📚 29 studies (Tier A: 0, B: 5)
This product: 50mg

Other Ingredients

Rice Flour

Label Claims — Verification

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

Target Groups

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

Product Information

📋 Directions for Use

SUGGESTED USAGE: As a dietary supplement, take one rounded 1/4 heaping teaspoon daily, preferably with meals.

⚠️ Warnings & Precautions

Do Not Eat Freshness Packet. Keep in Bottle.

🧪 Formulation Notes

Vegetarian Formula

Contains no yeast, wheat, gluten, sugar, salt, corn, soy or milk.

Vegetarian Formula.

Additional Information

CODE 0510 V1

B-50 Powder is a blend of key B vitamins combined with other nutritional factors for enhanced synergism. This formula provides high potencies of the most important B vitamins and is designed to supply your body’s required daily intake in one complete supplement.

NUTRITIONAL HEALTH

GMP QUALITY ASSURED

Product Details

UPC / SKU 7 33739 00510 6
DSLD Entry Date 2012-12-21
Product Type Other Combinations
Form Powder
Brand NOW
DSLD ID 14289
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
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
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
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
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
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
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
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
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
B Thiamine for Wernicke-Korsakoff Syndrome in people at risk from alcohol abuse
Systematic Review The Cochrane database of systematic reviews 2004
View all evidence for Thiamine →

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