No-Flush Niacin 500 mg

by Solgar · capsule · 250 vegetable capsules

Off the market since September 2021 (NIH)
UPC 0 33984 01912 6
DSLD label 263990
Serving 1 vegetable capsule
250 servings

No-Flush Niacin 500 mg by Solgar lists 4 ingredients, 4 with an amount per serving of 1 vegetable capsule, such as 400 mg of niacin and 100 mg of inositol. Its current label entered the NIH Dietary Supplement Label Database on June 16, 2022.

What is in No-Flush Niacin 500 mg?

Each row as the label prints it, per serving of 1 vegetable capsule. 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).

No-Flush Niacin 500 mg: Supplement Facts rows against the market (DSLD label 263990, January 2026 release)
Ingredient	Amount	% DV	Among products listing it
Niacin	400 mg	2,500%	Higher than 97% of 12,413 products listing niacin (median 20 mg). Per day at the most servings: 800 mg. 22.9 times the adult UL a day.
Inositol Hexanicotinate	500 mg		Higher than 75% of 84 products listing inositol nicotinate (median 285 mg). Per day at the most servings: 2,000 mg.
Inositol	100 mg		Higher than 76% of 4,042 products listing inositol (median 30 mg). Per day at the most servings: 200 mg.
Inositol Hexanicotinate	500 mg

Source: NIH ODS Dietary Supplement Label Database, label 263990 (entered June 16, 2022), version 9.4.0. See the label on DSLD or its label image (PDF). 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 2 servings a day, the most its directions give, the label lists 800 mg of niacin, 22.9 times the adult Tolerable Upper Intake Level.

The NIH database records 1 to 2 servings 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.

No-Flush Niacin (Inositol Hexanicotinate) 500 mgSolgar same ingredients
No-Flush NiacinVitaCeutical Labs same ingredients
No-Flush NiacinVitamer Laboratories same ingredients
Niacin Hex - No Flush 525 mgAnabolic Laboratories · off the market same ingredients
No-Flush NiacinVillage Vitality · off the market same ingredients
No-Flush Niacin 525 mg Inositol HexanicotinateNatural Nutra 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: Suggested Use: As a dietary supplement for adults, take one (1) vegetable capsule one to two times daily, preferably with a meal or as directed by a healthcare practitioner.
Warnings: Notice: Most people should not experience flushing when using this product. However a few sensitive individuals may experience a temporary skin flushing (hot feeling and skin redness), burning, itching, or rash caused by an increase in blood flow near the skin. Do not take on an empty stomach. Do not take more than the recommended dose unless prescribed by your healthcare practitioner.; Not intended for use by pregnant or nursing women. If you are taking any medications or have any medical condition, consult your healthcare practitioner before use.; Discontinue use and consult your healthcare practitioner if any adverse reactions occur.; Keep out of reach of children.; Do not use if outer bottle seal is missing or damaged.
Allergens and what it does not contain: Gluten, wheat & dairy free GF Certified Gluten-free; Free of: Gluten, wheat, dairy, soy, yeast, sugar, sodium, artificial flavor, sweetener, preservatives and color.
Storage: Store at room temperature.

Source: label statements in DSLD label 263990.

What else is on the label?

Other ingredients: Cellulose, Silica, Magnesium Stearate.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): GF Certified Gluten-free K Parve (Kosher). Listed with: Certified gluten-free (GFCO) (a seal is the label's claim; the certifier's own list confirms it).

How many labels does No-Flush Niacin 500 mg have?

5 labels are on file under this name since April 24, 2015: other sizes, label designs and reformulations. The current one leads this page.

Label 263990 (current) Entered June 16, 2022 · off the market September 28, 2021 · 250 vegetable capsules · UPC 0 33984 01912 6
Label 81657 Entered February 23, 2018 · off the market October 8, 2019 · 250 vegetable capsules · UPC 0 33984 01912 6
Label 81092 Entered December 22, 2017 · off the market September 10, 2018 · 100 vegetable capsules · UPC 0 33984 01911 9
Label 44084 Entered April 24, 2015 · off the market September 18, 2017 · 250 vegetable capsules · UPC 0 33984 01912 6
Label 44082 Entered April 24, 2015 · off the market September 15, 2017 · 100 vegetable capsules · UPC 0 33984 01911 9

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

Who makes it?

The label names Solgar, Inc. (manufacturer), Leonia, NJ, U.S.A.. All Solgar products.