PlainVitamins

B-2 100 mg

by Source Naturals · tablet or pill · 250 tablets

  • On the market (NIH)
  • UPC 0 21078 00410 3
  • DSLD label 295589
  • Serving 1 tablet
  • 250 servings

B-2 100 mg by Source Naturals lists 2 ingredients, 2 with an amount per serving of 1 tablet, such as 100 mg of riboflavin and 89 mg of calcium. Its current label entered the NIH Dietary Supplement Label Database on June 22, 2023.

What is in B-2 100 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).

B-2 100 mg: Supplement Facts rows against the market (DSLD label 295589, January 2026 release)
IngredientAmount% DVAmong products listing it
Riboflavinas Vitamin B2100 mg5,882%Riboflavin in B-2 100 mg against 9,824 products100 mg per serving; the middle half of products list 1.7 mg to 25 mg, the median 4 mg.DV 1.3 mg100 mg

Higher than 96% of 9,824 products listing riboflavin (median 4 mg).

Calcium89 mg9%Calcium in B-2 100 mg against 17,831 products89 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg89 mg

61% of 17,831 products listing calcium give more (median 115 mg).

Source: NIH ODS Dietary Supplement Label Database, label 295589 (entered June 22, 2023), 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:

  • Its 100 mg of riboflavin is higher than 96% of the 9,824 riboflavin products that print an amount; 110 list more.

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
Suggested Use: 1 tablet daily.
Warnings
Note: If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.
Do not use if either tamper-evident seal is broken or missing.
Keep out of the reach of children.
Allergens and what it does not contain
Suitable for vegetarians and hypoallergenic, contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.

Source: label statements in DSLD label 295589.

What else is on the label?

Other ingredients: Dibasic Calcium Phosphate, Stearic Acid, Silica, Modified Cellulose Gum, Magnesium Stearate.

How many labels does B-2 100 mg have?

4 labels are on file under this name since December 22, 2019: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 295589 (current) Entered June 22, 2023 · on the market · 250 tablets · UPC 0 21078 00410 3
  2. Label 295588 Entered June 22, 2023 · on the market · 100 tablets · UPC 0 21078 00409 7
  3. Label 211769 Entered December 22, 2019 · off the market July 6, 2022 · 250 tablets · UPC 0 21078 00410 3
  4. Label 211768 Entered December 22, 2019 · off the market July 6, 2022 · 100 tablets · UPC 0 21078 00409 7

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.

Where next?