Niacin 500 mg Timed Release

by Sundown Naturals · other (e.g. tea bag) · 200 caplets

Off the market since January 2018 (NIH)
UPC 0 30768 29505 9
DSLD label 30129
Serving 1 caplet

Niacin 500 mg Timed Release by Sundown Naturals lists 2 ingredients, 2 with an amount per serving of 1 caplet, such as 500 mg of niacin and 106 mg of calcium. Its current label entered the NIH Dietary Supplement Label Database on March 25, 2014.

What is in Niacin 500 mg Timed Release?

Each row as the label prints it, per serving of 1 caplet. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).

Niacin 500 mg Timed Release: Supplement Facts rows against the market (DSLD label 30129, January 2026 release)
Ingredient	Amount	% DV	Among products listing it
Niacinas Nicotinic AcidNiacin (Form: as Nicotinic Acid)	500 mg	2,500%	Higher than 98% of 12,413 products listing niacin (median 20 mg). 14.3 times the adult UL a day.
Calciumas Dicalcium PhosphateCalcium (Form: as Dicalcium Phosphate)	106 mg	11%	52% of 17,831 products listing calcium give more (median 115 mg).

Source: NIH ODS Dietary Supplement Label Database, label 30129 (entered March 25, 2014), version 9.4.0. See the label on DSLD. Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.

Is that a lot?

The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:

At 1 serving a day, the most its directions give, the label lists 500 mg of niacin, 14.3 times the adult Tolerable Upper Intake Level.

The NIH database records one serving a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.

The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.

Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.

Which products have the closest formulas?

6 products list the very same ingredients; the nearest amounts come first.

Niacin 500 mg Time ReleasedSundown Naturals same ingredients
Niacin 500 mg Time ReleaseSundown Naturals · off the market same ingredients
Niacin 500 mgSundown Naturals · off the market same ingredients
Niacin 500 mgSundown same ingredients
Niacin (Inositol Hexanicotinate) 500 mgWindmill Natural Vitamins · off the market same ingredients
No Flush Niacin 500 mgWindmill Natural Vitamins same ingredients

Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.

What does the label say about taking it?

Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.

Directions: Do not take on an empty stomach. Do not take more than the recommended dose unless prescribed by your doctor.; DIRECTIONS: FOR ADULTS, TAKE ONE (1) CAPLET DAILY, PREFERABLY WITH A MEAL.
Warnings: WARNING: Not intended for use by pregnant or nursing women. If you are taking any medications or have any medical condition, consult your doctor before use.; Discontinue use and consult your doctor if any adverse reactions occur.; NOTICE: Use of this product may cause a temporary skin flushing (hot feeling and skin redness), burning, itching, or rash caused by an increase in blood flow near the skin. Sensitive individuals may experience unexpected drop of blood pressure or dizziness. Do not take on an empty stomach. Do not take more than the recommended dose unless prescribed by your doctor.; KEEP OUT OF REACH OF CHILDREN.; TAMPER RESISTANT: DO NOT USE IF SEAL UNDER CAP IS BROKEN OR MISSING.
Allergens and what it does not contain: No Artificial Color, Flavor or Sweetener, No Preservatives, No Sugar, No Starch, No Milk, No Lactose, No Soy, No Gluten, No Wheat, No Yeast, No Fish. Sodium Free.
Storage: STORE AT ROOM TEMPERATURE AND AVOID EXCESSIVE HEAT.

Source: label statements in DSLD label 30129.

What else is on the label?

Other ingredients: Vegetable Cellulose, Stearic Acid, Vegetable Magnesium Stearate.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): {Bottle} PLEASE RECYCLE; {Wheat} FREE OF Gluten & Wheat; GUARANTEED LABORATORY TESTED QUALITY.

How many labels does Niacin 500 mg Timed Release have?

One label is on file, entered on March 25, 2014.

Label 30129 (current) Entered March 25, 2014 · off the market January 9, 2018 · 200 caplets · UPC 0 30768 29505 9

DSLD also links this label to: Niacin 500 mg (image difference, same product), Niacin 500 mg (package size difference, same product), Niacin 500 mg (package size difference, same product), Niacin 500 mg Time Released (package size difference, same product), Niacin 500 mg Time Release (image difference, same product), Niacin 500 mg Time Release (package size difference, same product), Niacin 500 mg Time Release (package size difference, same product), Niacin 500 mg (image difference, same product).

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Rexall Sundown, Inc. (manufacturer), Boca Raton, FL. All Sundown Naturals products.