FOS®

Fiber & Other Nutrients

Brand: Allergy Research Group

PowderFiber and Other NutrientsOn Market

Functions

Digestive & Gut

Product label for FOS — Click to view full label

Net Contents

100 Gram(s)

Serving Size

0.5–1 tsp

Servings Per Container

Supplement Form

Powder

Bar Code (UPC/SKU)

7 13947 71920 0

Product Version

Rev. 008

Label Analysis

Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.

5Active Ingredients

5 distinct active ingredients are disclosed in Supplement Facts.

100%Amount Transparency

Every active ingredient discloses a specific amount per serving.

5% Daily Value Coverage

5 ingredients report an established %DV per serving.

This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.

Supplement Facts

Serving Size: 0.5–1 tsp · 2–4 per day

Ingredient	Amount Per Serving	% Daily Value
Calories	5 Calorie(s)	—
Sodium	0 mg	0%
Total Carbohydrates	1.2 Gram(s)	1%
Dietary Fiber	3 mg	1%
Total Sugars	48 mg	1%
Protein	6.1 mg	1%
Fructooligosaccharides	1.25 Gram(s)	—

Percent Daily Values are based on a 2,000 calorie diet.

Target Groups

Adult (18 - 50 Years)

Label Claims

NutrientAll Other

Directions & Suggested Use

Suggested/Recommended/Usage/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 & Precautions

Precautions re: All Other

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.

Formulation

Formula re: Contains

Fructooligosaccharides (FOS) are short-chain polymers comprised of D-fructose and D-glucose. They are not metabolized or absorbed by the body like simple sugars, and have minimal caloric value.

Formulation re: Other

Hypoallergenic

FDA Statements

FDA Statement of Identity

Dietary Supplement

Other Label Statements

Brand IP Statement(s) re: (c), (TM), (SM)

NutraFlora

General: Product/Version Code

Rev. 008

Manufacturer & Distributor

Distributor

Allergy Research Group

Alameda, CA, 94502

510-263-2000

Market Reference

$8.70 – $199.00· 40 listings

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Where to Buy Locally

Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.

Showing representative supplement & health retailers — search above for stores in your area.

Nutrition Kingdom
4.8 (118)
Vitamin & supplements store
1535 S Kipling Pkwy Unit G, Lakewood, CO 80232
Directions (303) 862-9470
Colorado Discount Nutrition
5.0 (701)
Vitamin & supplements store
1945 S Sheridan Blvd Unit 103, Denver, CO 80227
Directions (720) 328-8364
Supplement Giant
4.9 (330)
Vitamin & supplements store
98 Wadsworth Blvd #126, Lakewood, CO 80226
Directions (303) 935-5516
Colorado Discount Nutrition
5.0 (201)
Vitamin & supplements store
8055 W Bowles Ave #2R, Littleton, CO 80123
Directions (720) 696-7923
NATURA, Hierbas Y Vitaminas
4.8 (74)
Vitamin & supplements store
145 S Sheridan Blvd Ste 214, Lakewood, CO 80226
Directions (303) 936-8886
COLORADO DISCOUNT NUTRITION
5.0 (397)
Vitamin & supplements store
9441 S University Blvd, Highlands Ranch, CO 80126
Directions (720) 389-8109
COLORADO DISCOUNT NUTRITION
5.0 (1070)
Vitamin & supplements store
6975 W 88th Ave F, Westminster, CO 80021
Directions (720) 920-9775
Supplement Giant
5.0 (369)
Vitamin & supplements store
5055 S Kipling St #C8, Littleton, CO 80127
Directions (303) 933-3933

Research & Studies

Immunomodulation of B lymphocytes by prebiotics, probiotics and synbiotics: application in pathologies
A Rousseaux, C Brosseau, M Bodinier - Nutrients, 2023 - mdpi.com
… This study demonstrated that GOS/FOS supplementation … /FOS is a safe method to prevent the progression of allergies … with FOS, both in the healthy and endotoxemic groups. Then, …
202391 citations
Fructooligosaccharides on inflammation, immunomodulation, oxidative stress, and gut immune response: a systematic review
GT Costa, QDJS Vasconcelos, GF Aragão - Nutrition Reviews, 2022 - academic.oup.com
… FOS supplementation regarding its prebiotic and probiotic effects on the gut, which result in many changes in terms of host health… that FOS supplementation ameliorates food allergies, 2 …
2022100 citations
Fructooligosaccharides and immune health: immunomodulatory effects via gut microbiota and direct molecular mechanisms
BJM Yap, SK Yeo, WK Ng, PVC Yong… - … Journal of Food …, 2025 - Taylor & Francis
… infants who received FOS or a FOS/GOS combination prebiotic supplement alongside hepatitis B … airway inflammation, supplementation with 2.5% FOS for one week prior to allergen …
20253 citations
Immunonutritional effects elicited by a novel multicomponent food supplement in children with cow's milk allergy: results from a randomized, placebo-controlled trial
L Carucci, E Caldaria, F Oglio, RF Iorio… - … in Allergy, 2026 - frontiersin.org
… supplement containing butyrate, LGG postbiotic, FOS, vitamin … two study groups, only the active study product group showed … This research was funded by the Italian Ministry of Health—…
20262 citations
Prebiotics in the infant microbiome: the past, present, and future
M Miqdady, J Al Mistarihi, A Azaz… - … Hepatology & Nutrition, 2020 - synapse.koreamed.org
… In particular, the GOS/FOS … supplementing with a particular probiotic strain. In this review, we discuss the latest clinical evidence regarding prebiotics and its role in gut immunity, allergy, …
2020100 citations
Dietary fructooligosaccharides induce immunoregulation of intestinal IgA secretion by murine Peyer's patch cells
A Hosono, A Ozawa, R Kato, Y Ohnishi… - Bioscience …, 2003 - Taylor & Francis
… , deˆned as live microbial food ingredients beneˆcial to health… FOS acts as a preventive agent with regard to food allergy. … prebiotic as well as probiotic supplements are able to regulate …
2003305 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2018-11-21. DSLD Label ID: 183300. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.