Net Contents
100 Tablet(s)
Serving Size
1 Tablet(s)
Servings Per Container
100
Supplement Form
Tablet or Pill
Bar Code (UPC/SKU)
7 40985 27474 3
Product Version
501023-0920N
Label Analysis
Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.
Single-ingredient formula listed in Supplement Facts.
Every active ingredient discloses a specific amount per serving.
1 ingredients report a %DV; 1 meet or exceed 100% DV.
Label states: Non-GMO, Gluten-Free.
This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.
Allergen Guide
Free From
- Gluten
Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.
Supplement Facts
Serving Size: 1 Tablet(s) · 1 per day
| Ingredient | Amount Per Serving | % Daily Value |
|---|---|---|
| Niacin | 500 mg | 3125% |
Not Present
Other Ingredients
Target Groups
Label Claims
Directions & Suggested Use
Suggested/Recommended/Usage/Directions
Directions: As a vitamin supplement, adults take one (1) tablet daily with any meal or as directed by a healthcare provider. Do not exceed recommended dosage. Individual results may vary.
Warnings & Precautions
Precautions re: All Other
Do not exceed recommended dosage.
Precautions re: Pregnant or Nursing or Prescription Medications
Warning: Consult a healthcare provider prior to use if pregnant, nursing, on medications, have a medical condition or are planning a medical procedure.
Precautions re: All Other
Stop use and contact a physician if adverse reactions occur. Niacin may cause temporary skin flushing, itching, and feelings of warmth. Do not use if product appears to be tampered with or seal is broken.
Precautions re: Children
Keep out of reach of children.
Storage
Storage
Store at room temperature.
Formulation
Formulation re: Other
Prolonged release
Formulation re: Does NOT Contain
Gluten free Non-GMO
Formulation re: Other
Guaranteed Quality Laboratory Tested
Formula re: Contains
Niacin (vitamin B-3) supports energy metabolism, heart health and the nervous system.
Formulation re: Other
Prolonged release vitamins are designed to reduce flushing.
Formulation re: Does NOT Contain
No added sugar, salt, yeast, preservatives, artificial flavors or colors.
FDA Statements
FDA Disclaimer Statement
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
FDA Statement of Identity
Vitamin Supplement
Other Label Statements
General Statements: All Other Content
Compare VS. Slo-Niacin This product is not manufactured or distributed by Mainpointe Pharmaceuticals, LLC, owner of the registered trademark Slo-Niacin.
Seals/Symbols
Trusted Quality for over 30 years
Manufacturer & Distributor
Manufacturer
21st Century HealthCare, Inc.
2119 S. Wilson St., Tempe, AZ, 85282, USA
Market Reference
21st Century Niacin 500 mg Flush Free Capsules
21st-century-vitamins4.8(19)$13.9921st Century Niacin 500 mg Prolonged Release Tablets
21st-century-vitamins4.7(307)$8.9921st Century Niacinamide 500 mg Prolonged Release 110 Tablets
Walmart - Thrifty White Health4.7(2000)$8.31Lowest21st Century Niacina Liberación Prolongada 500mg 100ct Niacinamide Vit B3 Sabor Neutro
internationalrxpharmacy.net5.0(1)$14.9921st Century Flush Free Niacin 500mg 110 Capsules Pack of 2
GoSupps.com4.8(19)$64.9921st Century HealthCare - 74098522550 - Dietary Supplement Nature's Way Vitamin B3 500 mg Strength Capsule 110 per Bottle 21st Century Nutritional Pro
Neobits.com$27.9521st Century Niacinamide 500 mg Tablets Prolonged Release - 110 ct Pack of 2
GoSupps.com4.7(2000)$29.99Niacin 500 mg Veg Tabs Slow Release - 100 Tablets
AlchePharma Naturals$16.69
Where to Buy Locally
Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.
Showing representative supplement & health retailers — search above for stores in your area.
The Vitamin Shoppe
4.6 (75)Vitamin & supplements store
1615 E Monte Vista Ave Ste 103, Vacaville, CA 95688
Vitamin Adventure
4.4 (26)Vitamin & supplements store
3017 Travis Blvd, Fairfield, CA 94534
GNC
4.0 (14)Vitamin & supplements store
461 Skymaster Cir Bldg 650, Travis AFB, CA 94535
NutriShop | Vacaville
4.9 (168)Vitamin & supplements store
196 Nut Tree Pkwy Ste j, Vacaville, CA 95687
GNC
3.4 (5)Vitamin & supplements store
1570 Gateway Blvd C, Fairfield, CA 94533
The Vitamin Shoppe
4.3 (78)Vitamin & supplements store
2152 Contra Costa Blvd, Pleasant Hill, CA 94523
Research & Studies
Niacin
M Meyer-Ficca, JB Kirkland - Advances in Nutrition, 2016 - academic.oup.com
… These results indicate that a therapeutic increase of NAD concentrations might prevent age-associated health decline and that dietary supplementation with niacin as the major …
2016112 citationsNiacin: chemical forms, bioavailability, and health effects
D MacKay, J Hathcock, E Guarneri - Nutrition reviews, 2012 - academic.oup.com
… under medical monitoring and supervision. Although available on the market as a … supplement in tablets of 500 mg and 750 mg, NA should not be used at gram dosages without medical …
2012170 citationsNiacin: The Real Story
AW Saul, A Hoffer, HD Foster - 2023 - books.google.com
… on niacin’s clinical benefits in a number of health conditions. These … A bottle of 100 tablets of vitamin C, 500 milligrams each, … to even a 100 milligrams niacin supplement. We need extra …
20237 citations… of a tolerable upper intake level of niacin: a systematic review and meta-analysis of the dose-dependent effects of nicotinamide and nicotinic acid supplementation
C Minto, MG Vecchio, M Lamprecht… - Nutrition …, 2017 - academic.oup.com
… In healthy individuals treated with nicotinic acid alone, major … The ULs were set at 10 mg/d and 900 mg/d in the European … 17 mg/d and 500 mg/d in the United Kingdom for nicotinic acid …
201743 citationsNiacin: the evidence, clinical use, and future directions
TC Villines, AS Kim, RS Gore, AJ Taylor - Current atherosclerosis reports, 2012 - Springer
… triglycerides: impact on Global Health outcomes (AIM-HIGH) … into prescription niacin and dietary supplement niacin (Tables … begin niacin extended-release at a starting dose of 500 mg …
201284 citationsPharmacologic use of niacin
J Prousky, CG Millman… - Journal of Evidence …, 2011 - journals.sagepub.com
… migraine, 300 to 500 mg of crystalline niacin can be chewed … Alternatively, 375 mg of sustained-release niacin can be taken … Physiological niacin supplements will improve skin health …
201143 citations
Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2025-02-23. DSLD Label ID: 326335. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.
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