Sustained-Release Niacin with niaXtend 500 mg®

Vitamins

Brand: Doctor's Best

Tablet or PillVitaminOn Market

Functions

Energy & Metabolism

Product label for Sustained-Release Niacin with niaXtend 500 mg — Click to view full label

Net Contents

120 Tablet(s)

Serving Size

1 Tablet(s)

Servings Per Container

120

Supplement Form

Tablet or Pill

Bar Code (UPC/SKU)

7 53950 00242 5

Product Version

YDRB242-5

Label Analysis

Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.

1Active Ingredients

Single-ingredient formula listed in Supplement Facts.

100%Amount Transparency

Every active ingredient discloses a specific amount per serving.

1% Daily Value Coverage

1 ingredients report a %DV; 1 meet or exceed 100% DV.

4Dietary Attributes

Label states: Vegan, Vegetarian, 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(Nicotinic Acid)	500 mg	3125%

Not Present

Other Ingredients

Rice BranCarnauba WaxStearic AcidMagnesium StearateSilica

Target Groups

VeganVegetarianAdult (18 - 50 Years)Gluten FreeDairy Free

Label Claims

NutrientAll OtherStructure/Function

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

Suggested Adult Use: Take 1 tablet daily with food, or as recommended by a nutritionally informed physician.

Warnings & Precautions

Precautions re: Pregnant or Nursing or Prescription Medications

Warning: If you are pregnant, nursing, have a medical condition, or taking medication, consult your physician before taking this product.

Precautions re: All Other

Temporary flushing such as warmth, itching or redness of the skin, are common side effects that may occur upon initial use. These effects may worsen if you drink alcohol or hot beverages shortly after taking niacin. Do not take more than 500 mg per day (one tablet) except under the supervision of a physician. Liver damage and jaundice are risks with high doses of niacin. Avoid high doses of niacin if you have a liver or kidney disorder.

Storage

Store in a cool dry place.

Formulation

Formula re: Contains

Doctor's Best Sustained-Release Niacin with niaXtend provides niacin in a form that helps minimize the incidence of uncomfortable skin flushing that is commonly associated with niacin. Approximately 200 coenzymes are comprised of niacin that play pivotal roles in metabolism and energy production within the body. niaXtend has been tested to encourage a favorable blood lipid profile. Research suggests that niacin, in combination with a well-balanced diet, may help maintain healthy cholesterol levels that are already within the normal range.

Formulation re: Does NOT Contain

Non-GMO / Gluten Free

Formulation re: Other

Helps support cardiovascular health Low flush

Formulation re: Vegetarian/Vegan

Vegan

Formulation re: Other

Helps support cardiovascular health Helps encourage a favorable balance of blood lipids Sustained-release formula decreases incidence of "skin flushing"

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

Dietary Supplement

Other Label Statements

Brand IP Statement(s) re: (c), (TM), (SM)

niaXtend is a registered trademark of Endurance Products Co.

Brand IP Statement(s) re: (c), (TM), (SM)

Doctor's Best Science-Based Nutrition

Manufacturer & Distributor

Distributor

Doctor's Best, Inc.

Tustin, California, 92780, USA

(800) 777-2474

Market Reference

$14.00 – $28.95· 6 listings

Doctor's Best Niacin Time-Release Supplement
Swanson Health Products4.7(226)
$18.79
Doctors Best Sustained-release Niacin With Niaxtend, Supports Heart
eBay - foxyfind
$28.95
Doctor's Best Timerelease Niacin With Niaxtend Nongmo, Vegan 500 Mg,
eBay - kardiackid2164.7(226)
$27.47
Niacin Extended Release Tablet mg
DiRxHealth.com
$14.00Lowest
ENDUR-ACIN Niacin Extended Release
Endurance Products4.4(10)
$22.99
Dr. Clark Store Niacin 500mg B3 100 Capsules
Dr. Clark Store5.0(12)
$21.49

Where to Buy Locally

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GNC
3.8 (33)
Vitamin & supplements store
5429 Fruitville Rd, Sarasota, FL 34232
Directions (941) 379-0416
The Vitamin Shoppe
4.4 (84)
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243 N Cattlemen Rd Unit # 71 Unit 71, Sarasota, FL 34243
Directions (941) 351-9895
Nutrishop Sarasota
4.9 (48)
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4780 S Tamiami Trl, Sarasota, FL 34231
Directions (941) 924-0064
The B-12 Store, Sarasota
4.9 (170)
Vitamin & supplements store
140 University Town Center Dr Unit 142, Sarasota, FL 34243
Directions (941) 926-6077
MJD Supplements
5.0 (1)
Vitamin & supplements store
2803 Fruitville Rd Ste 110, Sarasota, FL 34237
Directions (941) 957-1221
Special Nutrition
4.9 (139)
Vitamin & supplements store
1882 Stickney Point Rd, Sarasota, FL 34231
Directions (941) 929-0884
The Vitamin Shoppe
4.4 (103)
Vitamin & supplements store
4104 S Tamiami Trl US 41, Sarasota, FL 34231
Directions (941) 921-2173
GNC
3.1 (30)
Vitamin & supplements store
8424 N Lockwood Ridge Rd, Sarasota, FL 34243
Directions (941) 359-3779

Research & Studies

Niacin: The Real Story
AW Saul, A Hoffer, HD Foster - 2023 - books.google.com
… on niacin’s clinical benefits in a number of health conditions. … A bottle of 100 tablets of vitamin C, 500 milligrams each, … But the biggest reason to avoid sustained-release niacin is that …
20237 citations
Important considerations for treatment with dietary supplement versus prescription niacin products
JM Backes, RJ Padley, PM Moriarty - Postgraduate medicine, 2011 - Taylor & Francis
… Sustained-release niacin formulations employ a variety of … niacin 1500 mg/d (500 mg, 3 times daily; n = 40) and “no-flush” … careful supervision of a health care provider knowledgeable of …
201124 citations
Formulation Challenges: Multiple Vitamins and Minerals Dosage Forms
R Haider, A Mehdi, GK Das, Z Ahmed… - Clinical Trials and …, 2025 - clinicsearchonline.org
… Niacin and niacinamide are fairly solid compounds and have … The major Problem in formulating a sustained-release … The Nutrition Health and Labeling Act on the other hand …
2025
Dissolution profiles of nonprescription extended-release niacin and inositol niacinate products
IO Poon, DSL Chow, D Liang - American journal of health …, 2006 - academic.oup.com
… niacin products are marketed as dietary supplements under … The powder (equivalent to 500 mg of niacin) was transferred … and then provide a sustained release of niacin in vivo. The …
200627 citations
Evaluating the release of different commercial orally modified niacin formulations in vitro
C Chbib, MA Rashid, SM Shah, M Kazi, MN Uddin - Polymers, 2023 - mdpi.com
… a dietary supplement that follows the Dietary Supplement Health … among available sustained-release formulations [10,11]. … niacin brands, IR (250 mg), ER (500 mg), TR (1000 mg), …
20236 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2024-01-24. DSLD Label ID: 302710. 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.