PlainVitamins

Niacin 100 mg

by Rugby · tablet or pill · 100 tablets

  • On the market (NIH)
  • UPC 0 05364 07601 2
  • DSLD label 218785
  • Serving 1 tablet

Niacin 100 mg by Rugby lists 2 ingredients, 2 with an amount per serving of 1 tablet, such as 100 mg of niacin and 35 mg of calcium. Its current label entered the NIH Dietary Supplement Label Database on April 23, 2020.

What is in Niacin 100 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).

Niacin 100 mg: Supplement Facts rows against the market (DSLD label 218785, January 2026 release)
IngredientAmount% DVAmong products listing it
Niacinas Nicotinic Acid100 mg625%Niacin in Niacin 100 mg against 12,413 products100 mg per serving; the middle half of products list 13.2 mg to 48 mg, the median 20 mg.DV 16 mgUL 35 mg100 mg

Higher than 88% of 12,413 products listing niacin (median 20 mg). 2.9 times the adult UL a day.

Calcium35 mg3%Calcium in Niacin 100 mg against 17,831 products35 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg35 mg

82% of 17,831 products listing calcium give more (median 115 mg).

Source: NIH ODS Dietary Supplement Label Database, label 218785 (entered April 23, 2020), 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 100 mg of niacin, 2.9 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
Directions: Adults only: One tablet daily as a dietary supplement, or as directed by a physician.
Warnings
Tamper resistant - Do not use if imprinted safety seal under cap is broken or missing
Caution: Niacin may cause temporary flushing, itching and tingling, feelings of warmth and headache, particularly when beginning, increasing dose, or changing brand of niacin. These effects seldom require discontinuing niacin use. Skin rash, upset stomach, and low blood pressure when standing are less common symptoms; if they persist, contact a physician.
Keep out of reach of children
Allergens and what it does not contain
Free of sugar, starch, sodium, soy, gluten, preservatives, yeast, corn, animal by-products, artificial colors and flavors.
Storage
To preserve quality and freshness, keep bottle tightly closed. Store between 15 degrees- 30 degrees C (59 degrees- 86 degrees F).

Source: label statements in DSLD label 218785.

What else is on the label?

Other ingredients: Dicalcium Phosphate, Microcrystalline Cellulose, Talc, Stearic Acid.

How many labels does Niacin 100 mg have?

4 labels are on file under this name since December 24, 2013: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 218785 (current) Entered April 23, 2020 · on the market · 100 tablets · UPC 0 05364 07601 2
  2. Label 200808 Entered April 25, 2019 · off the market October 17, 2019 · 100 tablets · UPC 0 05364 07601 2
  3. Label 28338 Entered December 24, 2013 · on the market · 1000 tablets · UPC 0 0536-4076-10 4
  4. Label 28336 Entered December 24, 2013 · off the market August 27, 2018 · 100 tablets · UPC 0 0536-4076-01 2

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

Who makes it?

The label names Rugby Laboratories (distributor), Livonia, MI. All Rugby products.

Where next?