🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 100% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

1 Veg Capsule(s) Serving Size
180 Servings
Other Combinations Product Type
100% Evidence Coverage

Supplement Facts — Evidence Check

📊 Market median: 550.0mg (217 products) 📚 29 studies (Tier A: 0, B: 5)
This product: 640mg

Other Ingredients

Hypromellose Stearic Acid Rice Flour Silicon Dioxide

Label Claims — Verification

Nutrient
All Other
Structure/Function
All Other (97% of products) Structure/Function (86% of products) Nutrient (36% of products)

Target Groups

Vegan Vegetarian Adult (18 - 50 Years) Kosher Gluten Free

Product Information

📋 Directions for Use

Suggested Usage: Take 1 capsule daily as needed, with a meal.

⚠️ Warnings & Precautions

Caution: For adults only.

Consult physician if pregnant/nursing, taking medication, or have a medical condition (liver problems, stomach ulcers, diabetes, gout, etc.).

Keep out of reach of children.

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

🧪 Formulation Notes

Niacin (Vitamin B-3) is an essential B-Complex vitamin.

Flush-free niacin contains inositol hexanicotinate, a form of niacin that consists of six molecules of niacin linked to a single inositol molecule. It is slowly broken down in the body to yield free niacin and inositol. This gradual release of niacin allows for true niacin activity without the characteristic niacin flush that many people cannot tolerate.

Non-GMO

Vegetarian/Vegan

Triangle K (Kosher)

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients.

Inositol hexanicotinate is a stable, non-flushing source of niacin. This superior source of niacin works to reduce the common “niacin-flush” problems associated with high doses of niacin supplements.

This product has twice the Niacin (500 mg per capsule) as in our regular strength product (250 mg per capsule).

Additional Information

Natural color variation may occur in this product.

Store in a cool, dry place after opening.

Nutritional Health

Triangle K (Kosher)

Vitamins Family owned since 1968.

GMP Quality Assured

Product Details

UPC / SKU 7 33739 00500 7
DSLD Entry Date 2021-02-25
Product Type Other Combinations
Form Capsule
Brand NOW
DSLD ID 244582
Data Updated 2026-04-11

Research Evidence

241 Research Sources
55 Avg Quality Score
113 Meta Analysis
75 Systematic Review
32 Rct
11 Clinical Trial
3 Other
3 Regulatory Source
1 Cochrane Review
1 Narrative Review
1 Openfda Safety
A Niacin for primary and secondary prevention of cardiovascular events
Meta Analysis The Cochrane database of systematic reviews 2017
A Use of high potency statins and rates of admission for acute kidney injury: multicenter, retrospective observational analysis of administrative databases
Meta Analysis BMJ (Clinical research ed.) 2013
A Effect on cardiovascular risk of high density lipoprotein targeted drug treatments niacin, fibrates, and CETP inhibitors: meta-analysis of randomised controlled trials including 117,411 patients
Meta Analysis BMJ (Clinical research ed.) 2014
A A terminal metabolite of niacin promotes vascular inflammation and contributes to cardiovascular disease risk
Meta Analysis Nature medicine 2024
A Meta-analysis and imputation refines the association of 15q25 with smoking quantity
Meta Analysis Nature genetics 2010
A Genome-wide meta-analyses identify multiple loci associated with smoking behavior
Meta Analysis Nature genetics 2010
A Antidepressants for smoking cessation
Meta Analysis The Cochrane database of systematic reviews 2014
A Topical azelaic acid, salicylic acid, nicotinamide, sulphur, zinc and fruit acid (alpha-hydroxy acid) for acne
Meta Analysis The Cochrane database of systematic reviews 2020
B Assessment of the Role of Niacin in Managing Cardiovascular Disease Outcomes: A Systematic Review and Meta-analysis
Meta Analysis JAMA network open 2019
B Association Between Lowering LDL-C and Cardiovascular Risk Reduction Among Different Therapeutic Interventions: A Systematic Review and Meta-analysis
Meta Analysis JAMA 2016
View all evidence for Niacin →

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