No-Flush Niacin 500 mg
by Source Naturals · tablet or pill · 60 tablets
- On the market (NIH)
- UPC 0 21078 00921 4
- DSLD label 275428
- Serving 1 tablet
- 60 servings
No-Flush Niacin 500 mg by Source Naturals lists 2 ingredients, 2 with an amount per serving of 1 tablet, such as 500 mg of niacin and 143 mg of inositol. Its current label entered the NIH Dietary Supplement Label Database on October 24, 2022.
What is in No-Flush Niacin 500 mg?
Each row as the label prints it, per serving of 1 tablet. 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).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Niacinas Inositol Hexanicotinate, Vitamin B3 | 500 mg | 3,125% | Higher than 98% of 12,413 products listing niacin (median 20 mg). 14.3 times the adult UL a day. |
| Inositolas Inositol Hexanicotinate | 143 mg | Higher than 87% of 4,042 products listing inositol (median 30 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 275428 (entered October 24, 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 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.
- Non-Flush Niacin 500 mgNature's Harmony same ingredients
- Flush-Free Niacin 500 mgQuest · off the market same ingredients
- Flush-Free Niacin Hexancotinate 320 mgNOW · off the market same ingredients
- Flush-Free NiacinNew You Vitamins · off the market same ingredients
- No-Flush Niacin 500 mgThe Vitamin Shoppe same ingredients
- No Flush Niacin 500 mgThompson 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: 1 tablet daily.
- Warnings
- Do not use if either tamper-evident seal is broken or missing.
- Keep out of the reach of children.
- Note: If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.
- Allergens and what it does not contain
- Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, starch, preservatives, or artificial color, flavor or fragrance.
Source: label statements in DSLD label 275428.
What else is on the label?
Other ingredients: Sorbitol, Stearic Acid, Modified Cellulose Gum, Silica, Magnesium Stearate.
How many labels does No-Flush Niacin 500 mg have?
2 labels are on file under this name since October 24, 2022: other sizes, label designs and reformulations. The current one leads this page.
- Label 296110 Entered August 23, 2023 · off the market July 6, 2022 · 60 tablets · UPC 0 21078 00921 4
- Label 275428 (current) Entered October 24, 2022 · on the market · 60 tablets · UPC 0 21078 00921 4
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Source Naturals, Inc. (distributor), Santa Cruz, CA. All Source Naturals products.