Fos
by Allergy Research Group · powder · 100 grams
- On the market (NIH)
- UPC 7 13947 71920 0
- DSLD label 183300
- Serving 0.5 to 1 tsp (1.25-2.5 g); amounts per 0.5 tsp
- 80 servings
Fos by Allergy Research Group lists one ingredient: 1.25 g of fructooligosaccharides per serving of 0.5 tsp. Its current label entered the NIH Dietary Supplement Label Database on November 21, 2018.
What is in Fos?
Each row as the label prints it, per serving of 0.5 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).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Calories | 5 Calories | ||
| Sodium | 0 mg | 0% | |
| Total Carbohydrates | 1.2 g | 1% | 74% of 21,979 products listing carbohydrate give more (median 3 g). Per day at the most servings: 4.8 g. |
| Dietary Fiber | 3 mg | 1% | This amount is far outside what other labels list for fiber, or disagrees with the label's own %DV: possibly a unit or transcription slip in the database. Check the label image on DSLD. |
| Total Sugars | 48 mg | 1% | over 99% of 11,807 products listing sugar give more (median 2 g). Per day at the most servings: 0.192 g. |
| Protein | 6.1 mg | 1% | This amount is far outside what other labels list for protein, or disagrees with the label's own %DV: possibly a unit or transcription slip in the database. Check the label image on DSLD. |
| Fructooligosaccharides | 1.25 g | Higher than 88% of 526 products listing fructo-oligosaccharides (median 185 mg). Per day at the most servings: 5,000 mg. |
Source: NIH ODS Dietary Supplement Label Database, label 183300 (entered November 21, 2018), 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?
Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.
The NIH database records 2 to 4 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?
2 products list the very same ingredients; the nearest amounts come first.
- FOS 1.25 gAllergy Research Group Essential-Biotic same ingredients
- FosNutriCology Restore-Biotic same ingredients
- Fiber Gummy Rings Berry MelonOLLY 5 shared, 87% alike
- Fiber Gummies Strawberry FlavoredUpSpring 4 shared, 71% alike
- FOS 1,000 mgSource Naturals 4 shared, 61% alike
- Prebiotic Fiber GummiesPromend 5 shared, 60% alike
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, 1/2 to 1 level teaspoon (1.25-2.5 grams) mixed in water if desired, two to four times daily between meals, or as directed by a healthcare practitioner.
- Warnings
- Caution: Some individuals taking FOS may experience gastrointestinal bloating that persists longer than 1-2 weeks, possibly due to unfriendly microbes feeding on FOS. In such cases, this product should be discontinued.
- Storage
- Keep in a cool, dry place, tightly capped.
Source: label statements in DSLD label 183300.
How many labels does Fos have?
One label is on file, entered on November 21, 2018.
- Label 183300 (current) Entered November 21, 2018 · on the market · 100 grams · UPC 7 13947 71920 0
DSLD also links this label to: FOS Fructooligosaccharides (image difference, same product), FOS Fructooligosaccharides (image difference, same product), FOS Fructooligosaccharides (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 Allergy Research Group (distributor), Alameda, CA. All Allergy Research Group products.