fiber
Fiber supplements
Half of the 6,987 fiber supplements in the NIH label database that print an amount list 2 g or less per serving; the middle half list 1 g to 4 g (DSLD version 9.4.0, January 2026). The 506 products whose only supplement ingredient is fiber list a median of 2 g.
- Products listing it
- 8,7186,987 print an amount; 74 list it inside a blend without an amount
- Median per serving
- 2 gmiddle half 1 g to 4 g
How much fiber do supplements contain?
The median product lists 2 g per serving. One in ten lists 1 g or less, one in ten 6 g or more. The amount printed most often is 1 g (2,773 products).
Products by amount of fiber per serving
6,987 products, log scale; extreme 0.2% at each end left out of the drawing.
Source: Supplement Facts rows of every product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; amounts in one measure (weight).
Which products list the most fiber?
On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).
- QCarbo32 Grape FlavorHerbal Clean16 g
- Lean Meal Grass-Fed Whey Protein VanillaAdaptogen Research16 g
- Lean Meal Grass-Fed Whey Protein ChocolateAdaptogen Research16 g
- QCarbo32 Tropical FlavorHerbal Clean16 g
- Complete Whole Food Health Optimizer Natural FlavorSequel Vega15 g
- Complete Whole Food Health Optimizer Berry FlavorSequel Vega15 g
- Complete Whole Food Health Optimizer Vanilla Chai FlavorSequel Vega15 g
- Liquid Fiber Sugar Free OrangeNature's Way15 g
Have the amounts changed over the years?
Products whose current label entered DSLD in 2011 list a median of 2 g; those entered in 2025, 1.2 g.
| Year | Products | Median per serving |
|---|---|---|
| 2011 | 130 | 2 g |
| 2012 | 313 | 2 g |
| 2013 | 489 | 2 g |
| 2014 | 496 | 2.5 g |
| 2015 | 476 | 2 g |
| 2016 | 367 | 2 g |
| 2017 | 413 | 1 g |
| 2018 | 396 | 2 g |
| 2019 | 363 | 2 g |
| 2020 | 677 | 2 g |
| 2021 | 535 | 2 g |
| 2022 | 505 | 2 g |
| 2023 | 591 | 1.5 g |
| 2024 | 672 | 1.9 g |
| 2025 | 564 | 1.2 g |
Source: DSLD label entry dates and amounts, current labels.
In which products and brands?
Products listing fiber by DSLD product type
Brands listing it most: Nature's Plus (123), Nature's Way (116), Garden of Life (76), XYMOGEN (76), Natural Factors (74), NOW (67), Metagenics (64), Enzymatic Therapy (61), Source Naturals (60), Amazing Grass (57).
Every product listing fiber
8,718 products, A to Z by name (page 127 of 175), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Prostar 100% Whey Protein RaspberryUltimate Nutrition · off the marketno amount
- Prostar 100% Whey Protein Rum RaisinUltimate Nutrition · off the marketno amount
- Prostar 100% Whey Protein StrawberryUltimate Nutrition · off the marketno amount
- Prostar 100% Whey Protein Vanilla CremeUltimate Nutrition · off the marketno amount
- Prostasal PSA Formula 90Healthy Items0.05 g
- Prostate 600+Nature's Life1 g
- Prostate Maintain 600 PlusNature's Life1 g
- Protective Breast FormulaEnzymatic Therapy · off the market1 g
- Proteinyoutheory7 g
- Protein & Greens Organic ChocolateNatural Factors Whole Earth & Sea3 g
- Protein & Greens Organic TropicalNatural Factors Whole Earth & Sea2 g
- Protein & Greens Organic Vanilla ChaiNatural Factors Whole Earth & Sea2 g
- Protein & Greens Original UnflavoredParadise · off the market2 g
- Protein & Greens UnflavoredNatural Factors Whole Earth & Sea2 g
- Protein & Greens Vanilla FlavorParadise2 g
- Protein & Oats BlueberryMET-Rx7 g
- Protein & Oats CocoaMET-Rx7 g
- Protein & Oats Vanilla CinnamonMET-Rx7 g
- Protein + Energy Vanilla LatteTrusource1 g
- Protein + Mushrooms Chocolate Birthday Cake FlavorSunwarrior11 g
- Protein + Mushrooms Vanilla Birthday Cake FlavorSunwarrior9 g
- Protein 15 g ChocolateNutricost Womenno amount
- Protein 15 g VanillaNutricost Womenno amount
- Protein 5 Plus ChocolateGreens First Lean2 g
- Protein 5 Plus VanillaGreens First Lean1 g
- Protein Advance XR Chocolate SupremeGNC Pro Performance1 g
- Protein Balance Natural Vanilla FlavoredVitaScript1 g
- Protein BerryliciousNatural Factors2 g
- Protein Blend Powder Right 4 Blood Type ARight 4 Your Type6 g
- Protein Blend Powder Right 4 Blood Type B/ABRight 4 Your Type3 g
- Protein Blend Powder Right 4 Blood Type ORight 4 Your Type6 g
- Protein Breakthrough Berry BlissBiOptimizers7 g
- Protein Breakthrough Chocolate BlissBiOptimizers7 g
- Protein Chocolate FlavoredJayLab Pro1 g
- Protein Classic Chocolate FlavorSunwarrior2 g
- Protein Classic Plus Chocolate FlavorSunwarrior3 g
- Protein Classic Plus UnflavoredSunwarrior2 g
- Protein Classic Plus Vanilla FlavorSunwarrior2 g
- Protein Classic UnflavoredSunwarrior1 g
- Protein Classic Vanilla FlavorSunwarrior1 g
- Protein Coffee Toasted HazelnutRapid Fireno amount
- Protein Cosmic CacaoLive Conscious1 g
- Protein Creamer Original BlendRapid Fireno amount
- Protein Creamer Toasted HazelnutRapid Fireno amount
- Protein Creamy ChocolateEe Essential elements1 g
- Protein Decadent ChocolateNatural Factors · off the market2 g
- Protein Devil's CakeBlack Magicno amount
- Protein Energy Mocha CappuccinoON Optimum Nutrition1 g
- Protein Energy Naturally Flavored ChocolateBoomer Nutrition1 g
- Protein Energy Naturally Flavored VanillaBoomer Nutrition1 g