FOS + L-Glutamine

by Genestra Brands · capsule · 60 vegetarian capsules

  • On the market (NIH)
  • UPC 8 83196 10430 7
  • DSLD label 203087
  • Serving 5 capsules
  • 12 servings

FOS + L-Glutamine by Genestra Brands lists 2 ingredients, 2 with an amount per serving of 5 capsules, such as 925 mg of jerusalem artichoke (helianthus tuberosus) root std. extract and 1,500 mg of L-glutamine, beside 1 Nutrition Facts row (calories, fat and the like). Its current label entered the NIH Dietary Supplement Label Database on May 28, 2019.

What is in FOS + L-Glutamine?

Each row as the label prints it, per serving of 5 capsules. 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 + L-Glutamine: Supplement Facts rows against the market (DSLD label 203087, January 2026 release)
IngredientAmount% DVAmong products listing it
Total Carbohydratesless than 1 g1%
Jerusalem Artichoke (Helianthus tuberosus) root std. extractas Total FructansJerusalem Artichoke (Helianthus tuberosus) root std. extract (Form: 90% Total Fructans) PlantPart: root Genus: Helianthus Species: tuberosus925 mg
L-Glutamine1,500 mgGlutamine in FOS + L-Glutamine against 1,850 products1.5 g per serving; the middle half of products list 0.356 g to 3 g, the median 1 g.1.5 g

Higher than 53% of 1,850 products listing glutamine (median 1 g). Per day at the most servings: 4.5 g.

Source: NIH ODS Dietary Supplement Label Database, label 203087 (entered May 28, 2019), 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 3 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?

The products whose ingredient lists overlap most with FOS + L-Glutamine's, rare ingredients counting for more.

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
Recommended dose: Take 5 capsules 3 times daily, or as recommended by your health professional.
Warnings
Warning: If you are pregnant or lactating, do not use. If you have any health condition or are taking any medication, consult your health professional before use.
Keep out of the reach of children.
Use only if safety seal is intact.
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 203087.

What else is on the label?

Other ingredients: Hypromellose, Cellulose, Magnesium Stearate, Silica.

How many labels does FOS + L-Glutamine have?

2 labels are on file under this name since February 23, 2016: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 203087 (current) Entered May 28, 2019 · on the market · 60 vegetarian capsules · UPC 8 83196 10430 7
  2. Label 56191 Entered February 23, 2016 · off the market November 4, 2024 · 60 vegetable capsules · UPC 883196 10430

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

Who makes it?

The label names Seroyal USA (distributor), Pittsburgh, PA. All Genestra Brands products.

Where next?