Flush-Free Niacin 500 mg

by Longevity Medical Clinic · capsule · 120 capsules

  • On the market (NIH)
  • DSLD label 308011
  • Serving 1 veggie cap
  • 120 servings

Flush-Free Niacin 500 mg by Longevity Medical Clinic lists 4 ingredients, 4 with an amount per serving of 1 veggie cap, such as 500 mg of niacin and 135 mg of inositol. Its current label entered the NIH Dietary Supplement Label Database on March 22, 2024.

What is in Flush-Free Niacin 500 mg?

Each row as the label prints it, per serving of 1 veggie cap. 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).

Flush-Free Niacin 500 mg: Supplement Facts rows against the market (DSLD label 308011, January 2026 release)
IngredientAmount% DVAmong products listing it
Niacinas Vitamin B3500 mg3,125%Niacin in Flush-Free Niacin 500 mg against 12,413 products500 mg per serving; the middle half of products list 13.2 mg to 48 mg, the median 20 mg.DV 16 mgUL 35 mg500 mg

Higher than 98% of 12,413 products listing niacin (median 20 mg). 14.3 times the adult UL a day.

Inositol Hexanicotinate640 mgInositol nicotinate in Flush-Free Niacin 500 mg against 84 products1,280 mg per serving; the middle half of products list 75 mg to 850 mg, the median 285 mg.1,280 mg

Higher than 87% of 84 products listing inositol nicotinate (median 285 mg).

Inositol135 mgInositol in Flush-Free Niacin 500 mg against 4,042 products135 mg per serving; the middle half of products list 10 mg to 80 mg, the median 30 mg.135 mg

Higher than 86% of 4,042 products listing inositol (median 30 mg).

Inositol Hexanicotinate640 mg

Source: NIH ODS Dietary Supplement Label Database, label 308011 (entered March 22, 2024), 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.

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
Recommendations: Take one (1) Veggie Cap daily with food, or as directed by your Longevity physician.
Warnings
Tamper evident. Do not use if seal is broken.
Keep out of reach of children.
Consult your physician if you are pregnant or breastfeeding before using this product.
Allergens and what it does not contain
Not manufactured with: sugar, salt, wheat, gluten, soy, milk, egg, shellfish or preservatives.
Storage
Store in a cool dry place.

Source: label statements in DSLD label 308011.

What else is on the label?

Other ingredients: Cellulose, Stearic Acid, Magnesium Stearate, Rice Flour, Silica.

How many labels does Flush-Free Niacin 500 mg have?

One label is on file, entered on March 22, 2024.

  1. Label 308011 (current) Entered March 22, 2024 · on the market · 120 capsules

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

Who makes it?

The label names Longevity Medical Clinic (distributor), Kirkland, WA. All Longevity Medical Clinic products.

Where next?