Vitamin B1 (Thiamine Mononitrate)

by BulkSupplements.com · powder · 500 grams

  • On the market (NIH)
  • UPC X000HUZ4EB
  • DSLD label 294344
  • Serving 100 milligrams
  • 4000 servings

Vitamin B1 (Thiamine Mononitrate) by BulkSupplements.com lists one ingredient: 92 mg of thiamine per serving of 100 milligrams. Its current label entered the NIH Dietary Supplement Label Database on July 18, 2023.

What is in Vitamin B1 (Thiamine Mononitrate)?

Each row as the label prints it, per serving of 100 milligrams. 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).

Vitamin B1 (Thiamine Mononitrate): Supplement Facts rows against the market (DSLD label 294344, January 2026 release)
IngredientAmount% DVAmong products listing it
Thiamineas Thiamine Mononitrate, Vitamin B192 mg7,657%Thiamin in Vitamin B1 (Thiamine Mononitrate) against 9,830 products92 mg per serving; the middle half of products list 1.5 mg to 25 mg, the median 5 mg.DV 1.2 mg92 mg

Higher than 94% of 9,830 products listing thiamin (median 5 mg).

Source: NIH ODS Dietary Supplement Label Database, label 294344 (entered July 18, 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 92 mg of thiamin is higher than 94% of the 9,830 thiamin products that print an amount; 603 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: As a dietary supplement, take 100 mg once daily, or as directed by a physician. Use an accurate milligram scale to measure.
Warnings
Always consult a physician before taking any dietary supplement.
Keep out of reach of children.
Allergens and what it does not contain
Free of: Soy, dairy, yeast, gluten
Storage
Store in a dry, cool, dark place.

Source: label statements in DSLD label 294344.

What else is on the label?

Other ingredients: None.

How many labels does Vitamin B1 (Thiamine Mononitrate) have?

7 labels are on file under this name since July 18, 2023: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 311764 Entered September 25, 2024 · off the market January 30, 2024 · 100 grams · UPC X000HUZ4EL
  2. Label 311765 Entered April 23, 2024 · off the market January 30, 2024 · 250 grams · UPC X000HUZ4E1
  3. Label 311763 Entered April 23, 2024 · off the market January 30, 2024 · 1 kilogram · UPC X000HUZ4F5
  4. Label 294345 Entered September 25, 2023 · off the market February 25, 2025 · 250 grams · UPC X000HUZ4E1
  5. Label 294347 Entered July 18, 2023 · off the market February 25, 2025 · 1 kilogram · UPC X000HUZ4F5
  6. Label 294346 Entered July 18, 2023 · off the market February 25, 2025 · 100 grams · UPC X000HUZ4EL
  7. Label 294344 (current) Entered July 18, 2023 · on the market · 500 grams · UPC X000HUZ4EB

DSLD also links this label to: Thiamine Mononitrate Vitamin B1 Powder 200 mg (image difference, same product).

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

Who makes it?

The label names BulkSupplements.com (distributor), Henderson, NV. All BulkSupplements.com products.

Where next?