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Fiber · Supplement ingredient

Fructo-Oligosaccharides (FOS)

Fructo-Oligosaccharides (FOS) is listed on 678 U.S. supplement product labels in the NIH DSLD, #280 of 4,614 by label frequency.

678
Products
#280 of 4,614
By frequency
Verify with NIH DSLD → · FDA Daily Value reference → · Page 2 of 14

How common is Fructo-Oligosaccharides (FOS)?

Number of supplement labels listing Fructo-Oligosaccharides (FOS) vs nearby fiber ingredients

products
Source NIH Dietary Supplement Label Database (DSLD) As of 2026

Products containing Fructo-Oligosaccharides (FOS)

Bronson Bears Chewable Chocolate Probiotic
Bronson Laboratories
22 ingredients · Non-Nutrient/Non-Botanical
On Market
Calcium Plus Mixed Berry Flavor
Pure Essence Ionic-Fizz
26 ingredients · Botanical with Nutrients
On Market
Calcium Plus Mixed Berry Flavor
Pure Essence Ionic-Fizz
26 ingredients · Botanical with Nutrients
On Market
Calcium Plus Orange-Vanilla Flavor
Pure Essence Ionic-Fizz
23 ingredients · Botanical with Nutrients
On Market
Calcium Plus Orange-Vanilla Flavor
Pure Essence Ionic-Fizz
23 ingredients · Botanical with Nutrients
On Market
Calcium Plus Raspberry-Lemonade Flavor
Pure Essence Ionic-Fizz
27 ingredients · Botanical with Nutrients
On Market
Calcium Plus Raspberry-Lemonade Flavor
Pure Essence Ionic-Fizz
27 ingredients · Botanical with Nutrients
On Market
Chewable Acidophilus Raspberry
Nature's Blend
13 ingredients · Other Combinations
On Market
Chewable Advanced Multi EA Mixed Fruit
Bariatric Advantage Innovations
48 ingredients · Other Combinations
On Market
Chewable Advanced Multi EA Mixed Fruit
Bariatric Advantage Innovations
48 ingredients · Other Combinations
On Market
Chewable Advanced Multi EA Starwberry
Bariatric Advantage Innovations
48 ingredients · Other Combinations
On Market
Chewable Advanced Multi EA Strawberry
Bariatric Advantage Innovations
48 ingredients · Other Combinations
On Market
Chewable Advanced Multi EA without Iron Mixed Fruit
Bariatric Advantage Innovations
44 ingredients · Other Combinations
On Market
Chewable Advanced Multi EA without Iron Mixed Fruit
Bariatric Advantage Innovations
47 ingredients · Other Combinations
On Market
Chewable High ADEK with Iron Tropical Fruit
Bariatric Advantage
40 ingredients · Multi-Vitamin and Mineral (MVM)
On Market
Chewable High ADEK with Iron Tropical Fruit
Bariatric Advantage
40 ingredients · Multi-Vitamin and Mineral (MVM)
On Market
Chewable Iron 29 with Vitamin C Passion Fruit
Bariatric Advantage
10 ingredients · Other Combinations
On Market
Chewable Iron 29 with Vitamin C Passion Fruit
Bariatric Advantage
10 ingredients · Other Combinations
On Market
Chewable Iron 29 with Vitamin C Passion Fruit
Bariatric Advantage
10 ingredients · Other Combinations
On Market
Chewable Iron 30 mg
Nature's Blend
13 ingredients · Other Combinations
On Market
Chewable Iron 60 mg with Vitamin C Lemon & Lime
Bariatric Advantage
11 ingredients · Other Combinations
On Market
Chewable Iron 60 mg with Vitamin C Lemon & Lime
Bariatric Advantage
11 ingredients · Other Combinations
On Market
Chewable Iron 60 mg with Vitamin C Lemon & Lime
Bariatric Advantage
11 ingredients · Other Combinations
On Market
Chewable Magnesium for Children Cherry Naturally Flavored
Vitables
13 ingredients · Mineral
On Market
Chewable Probiotic
Protocol For Life Balance
27 ingredients · Non-Nutrient/Non-Botanical
On Market
Chewable Ultra Solo with Iron Citrus
Bariatric Advantage
41 ingredients · Multi-Vitamin and Mineral (MVM)
On Market
Chewable Ultra Solo with Iron Citrus
Bariatric Advantage
41 ingredients · Multi-Vitamin and Mineral (MVM)
On Market
Chewable Ultra Solo with Iron Citrus
Bariatric Advantage
41 ingredients · Multi-Vitamin and Mineral (MVM)
On Market
Chewable Ultra Solo without Iron Citrus
Bariatric Advantage
40 ingredients · Multi-Vitamin and Mineral (MVM)
On Market
Chewable Ultra Solo without Iron Citrus
Bariatric Advantage
40 ingredients · Multi-Vitamin and Mineral (MVM)
On Market
ChildBiotics Probiotics with Colostrum Powder Packets Tropical Orange
ChildLife Essentials
12 ingredients · Other Combinations
On Market
Children's Banana BioAcidophilus
BioCare
8 ingredients · Other Combinations
On Market
Children's Mindlinx Complex
BioCare
11 ingredients · Other Combinations
On Market
Children's Probiotics Formula
CATALO
8 ingredients · Other Combinations
On Market
Children's Strawberry BioAcidophilus
BioCare
8 ingredients · Other Combinations
On Market
Children's Strawberry BioAcidophilus
BioCare
8 ingredients · Other Combinations
On Market
Chocolate Chocolate Chip Nutrition Shakes
iSatori
58 ingredients · Amino acid/Protein
On Market
Cholesterol Health
Emerald Labs
32 ingredients · Other Combinations
On Market
Chromium Picolinate 1000 mcg Natural Lemon-Raspberry Flavor
Solaray
14 ingredients · Mineral
On Market
Clear Nails Plus
Justified Laboratories
13 ingredients · Other Combinations
On Market
Clear Nails Plus Max
Justified Laboratories
10 ingredients · Other Combinations
On Market
Clear Nails Ultra
Romeo Health
10 ingredients · Other Combinations
On Market
Clinical Digestion
Natural Clinician
9 ingredients · Other Combinations
On Market
Collagen Gummy Rings Peach Bellini
OLLY
24 ingredients · Amino acid/Protein
On Market
Collagen Jelly Beauty Complex Sweet Orange
NOW Solutions
26 ingredients · Other Combinations
On Market
Collagen Jelly Beauty Complex Sweet Plum
NOW Solutions
24 ingredients · Amino acid/Protein
On Market
Colon & Bowel Probiotic
Terry Naturally
9 ingredients · Non-Nutrient/Non-Botanical
On Market
Colon Support
Vitamer Laboratories
14 ingredients · Botanical with Nutrients
On Market
Colon Support
NHC Natural Healthy Concepts
14 ingredients · Botanical with Nutrients
On Market
Complete Feminine Balance
AZO
15 ingredients · Non-Nutrient/Non-Botanical
On Market

Nearby Ingredients in Fiber

Other ingredients in the Fiber category cataloged in the NIH DSLD. Useful for comparing how common different nutrients are across the US supplement market.

Compare Fructo-Oligosaccharides (FOS) vs Cellulose →

Cellulose
38,497 products · Fiber
Fiber (unspecified)
7,667 products · Fiber
Pectin
3,219 products · Fiber
Guar
1,988 products · Fiber
Rice Bran
1,458 products · Fiber

Nationwide ingredients with similar DSLD presence

Two peer sets for Fructo-Oligosaccharides (FOS): closest on total DSLD label listings (678 here) and closest on distinct brands that list it (212 here). Peers exclude the same DSLD category, and rows stay link-disjoint so each axis is a distinct neighborhood.

Similar label frequency

Nearest other ingredients by distinct DSLD product labels (floored at ≥50), outside this category.

Similar brand breadth

Nearest other ingredients by distinct brands listing them (floored at ≥100 brands), distinct from the label-frequency row.

Frequently asked about Fructo-Oligosaccharides (FOS)

How many supplement products contain Fructo-Oligosaccharides (FOS)? ▼
678 supplement product labels in the NIH DSLD currently lists Fructo-Oligosaccharides (FOS) as an ingredient. By label frequency it ranks #280 of 4,614 among ingredients PlainVitamins ranks (same sort as /rankings/most-common-ingredients). Browse them below.

Source: NIH Office of Dietary Supplements, Dietary Supplement Label Database (DSLD). Regulatory reference: Source: Dietary Supplement Health and Education Act (DSHEA), 1994, 21 U.S.C. § 321(ff).

Disclaimer, Not Medical Advice: Information on this page is based on manufacturer-declared label data and is provided for educational and reference purposes only. It does not constitute medical, nutritional, or health advice. Consult a licensed healthcare provider before starting, stopping, or combining any supplement, especially if you are pregnant, nursing, take prescription medication, or have a medical condition.

Read our methodology , how this data is sourced, computed, and verified.

Every figure on PlainVitamins is rendered directly from the NIH Dietary Supplement Label Database (DSLD), no number is typed in by an editor. Ingredient figures are computed directly from the NIH DSLD, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.