PlainVitamins

FOS Powder

by Douglas Laboratories · powder · 4 oz.

  • On the market (NIH)
  • UPC 3 10539 01165 2
  • DSLD label 6259
  • Serving 1 tsp
  • 37 servings

FOS Powder by Douglas Laboratories lists one ingredient: 3 g of fos per serving of 1 tsp. Its current label entered the NIH Dietary Supplement Label Database on February 23, 2012.

What is in FOS Powder?

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

FOS Powder: Supplement Facts rows against the market (DSLD label 6259, January 2026 release)
IngredientAmount% DVAmong products listing it
Total Carbohydrates3 g1%Carbohydrate in FOS Powder against 21,979 products3 g per serving; the middle half of products list 1 g to 6 g, the median 3 g.3 g

47% of 21,979 products listing carbohydrate give more (median 3 g).

Fos3 gFructo-Oligosaccharides in FOS Powder against 526 products3,000 mg per serving; the middle half of products list 75 mg to 500 mg, the median 185 mg.3,000 mg

Higher than 95% of 526 products listing fructo-oligosaccharides (median 185 mg).

Source: NIH ODS Dietary Supplement Label Database, label 6259 (entered February 23, 2012), 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:

  • Its 3,000 mg of fos (filed by NIH under fructo-oligosaccharides) is higher than 95% of the 526 fructo-oligosaccharides products that print an amount; 21 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?

3 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 Usage: As a dietary supplement, adults take 1 teaspoon daily with juice or water or as directed by your healthcare professional.
Warnings
KEEP OUT OF REACH OF CHILDREN.
Allergens and what it does not contain
This product contains NO yeast, soy protein, wheat gluten, milk/dairy, corn, sodium, sugar, starch, artificial coloring, preservatives or flavoring.
Storage
For optimal storage conditions, keep refrigerated with lid tightly sealed after opening. Tamper resistant package, do not use if outer seal is missing.

Source: label statements in DSLD label 6259.

How many labels does FOS Powder have?

One label is on file, entered on February 23, 2012.

  1. Label 6259 (current) Entered February 23, 2012 · on the market · 4 oz. · UPC 3 10539 01165 2

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

Who makes it?

The label names Douglas Laboratories (manufacturer), Pittsburgh, PA. All Douglas Laboratories products.

Where next?