🟢 92/100

This product looks safe

  • Niacin: 80mg is 2.3× the Tolerable Upper Intake Level (35mg)
  • Folate: 334mg is 334.0× the Tolerable Upper Intake Level (1.0mg)
  • 89% of ingredients have research evidence
D Label Compliance Grade

Product Label

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Safety Alerts

⚠️ Niacin: 80mg is 2.3× the Tolerable Upper Intake Level (35mg)
⚠️ Folate: 334mg is 334.0× the Tolerable Upper Intake Level (1.0mg)

Label Data

1 Capsule(s) Serving Size
60 Servings
Vitamin Product Type
89% Evidence Coverage

Supplement Facts — Evidence Check

40 mg (3333% DV)
📊 33.3× RDA — above typical dose 📚 76 studies (Tier A: 0, B: 33)
RDA 1.2mg This product: 40mg
30 mg (2308% DV)
📊 23.1× RDA — above typical dose 📚 12 studies (Tier A: 0, B: 1)
RDA 1.3mg This product: 30mg
80 mg (500% DV)
⚠️ Exceeds Tolerable Upper Intake Level by 2.3× (UL: 35 mg) 📚 193 studies (Tier A: 5, B: 63)
RDA 14mg This product: 80mg UL 35mg
100 mg (5882% DV)
📊 76.9× RDA — above typical dose (UL: 100 mg) 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 100mg UL 100mg
334 mcg DFE (84% DV)
⚠️ Exceeds Tolerable Upper Intake Level by 334.0× (UL: 1.0 mg) 📚 225 studies (Tier A: 10, B: 105)
RDA 0.4mg This product: 334mg UL 1.0mg
100 mcg (4167% DV)
📊 41.7× RDA — above typical dose 📚 138 studies (Tier A: 1, B: 44)
RDA 0.0024mg This product: 0.1mg
80 mcg (267% DV)
✅ 2.7× RDA — within safe limits 📚 26 studies (Tier A: 0, B: 11)
RDA 0.03mg This product: 0.08mg
45 mg (900% DV)
📊 9.0× RDA — above typical dose 📚 1 studies — no high-quality reviews
RDA 5mg This product: 45mg
14 mg (3% DV)
📊 Market median: 125.0mg (294 products) 📚 36 studies (Tier A: 1, B: 7)
RDA 550mg This product: 14mg UL 3500mg

Other Ingredients

Hypromellose capsule Cellulose Calcium Laurate Silicon Dioxide

Label Claims — Verification

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

Target Groups

Adult (18 - 50 Years) Gluten Free

Product Information

📋 Directions for Use

Suggested use: Take 1 capsule daily or as recommended by your health-care practitioner.

⚠️ Warnings & Precautions

Tamper evident: Use only if bottle is sealed.

If pregnant, consult your health-care practitioner before using this product.

🧪 Formulation Notes

Foundational

Women's health

Gluten free

Manufactured in the USA using US & imported ingredients

This product uses Gnosis S.p.A.'s L-5-Methyltetrahydrofolic Acid, Glucosamine Salt (Quatrefolic).

Additional Information

Store tightly sealed in a cool, dry place.

NSF Certified for Sport

Product Details

UPC / SKU 6 93749 10603 6
DSLD Entry Date 2023-06-22
Product Type Vitamin
Form Capsule
Brand Thorne
DSLD ID 291770
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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