PlainVitamins

Tru Niagen 300 mg

by ChromaDex · capsule · 30 vegetarian capsules

  • On the market (NIH)
  • UPC 8 50015 31111 6
  • DSLD label 323170
  • Serving 1 vegetarian capsule
  • 30 servings

Tru Niagen 300 mg by ChromaDex lists one ingredient: 300 mg of niagen per serving of 1 vegetarian capsule. Its current label entered the NIH Dietary Supplement Label Database on April 24, 2025.

What is in Tru Niagen 300 mg?

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

Tru Niagen 300 mg: Supplement Facts rows against the market (DSLD label 323170, January 2026 release)
IngredientAmount% DVAmong products listing it
Niagenas Nicotinamide Riboside Chloride300 mg1,875%*Niacin in Tru Niagen 300 mg against 12,413 products300 mg per serving; the middle half of products list 13.2 mg to 48 mg, the median 20 mg.DV 16 mgUL 35 mg300 mg

Higher than 97% of 12,413 products listing niacin (median 20 mg). Per day at the most servings: 900 mg. 25.7 times the adult UL a day.

* % Daily Value computed from the printed amount and the FDA Daily Value (21 CFR 101.9); the label prints none for that row.

Source: NIH ODS Dietary Supplement Label Database, label 323170 (entered April 24, 2025), 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 3 servings a day, the most its directions give, the label lists 900 mg of niacin, 25.7 times the adult Tolerable Upper Intake Level.

The NIH database records 1 to 3 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.

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: Adults take one capsule 1-3 times daily as needed or as recommended by your healthcare professional.
Warnings
Caution: If you are pregnant, nursing, or taking any medications, please seek the advice of a healthcare professional prior to use.
Not intended for use by children under 18.
Tamper resistant: Do not use if seal under cap is broken or missing.
Storage
Store in original container in a cool, dry place.

Source: label statements in DSLD label 323170.

What else is on the label?

Other ingredients: Microcrystalline Cellulose, Hypromellose, Magnesium Stearate.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Crescent M (Halal) Star-K (Kosher) Alkemist Assured.

How many labels does Tru Niagen 300 mg have?

3 labels are on file under this name since May 24, 2023: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 323170 (current) Entered April 24, 2025 · on the market · 30 vegetarian capsules · UPC 8 50015 31111 6
  2. Label 323171 Entered January 23, 2025 · on the market · 90 vegetarian capsules · UPC 8 56029 00855 4
  3. Label 295562 Entered May 24, 2023 · on the market · 30 vegetarian capsules · UPC 8 50015 31111 6

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

Who makes it?

The label names ChromaDex, Inc (distributor), Los Angeles, CA. All ChromaDex products.

Where next?