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 144 of 175), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Soy Protein Isolate Creamy VanillaNOW Sports3 g
- Soy Protein Isolate Natural ChocolateNOW Sports · off the marketno amount
- Soy Protein Isolate Natural UnflavoredNOW Sports · off the market1 g
- Soy Protein Isolate Natural VanillaNOW Sports · off the market3 g
- Soy Protein Isolate Powder 30 gBulkSupplements.com3 g
- Soy Protein Isolate Powder Delicious ChocolatePuritan's Pride1 g
- Soy Protein Isolate Powder UnflavoredVitamin Worldno amount
- Soy Protein Isolate Pure UnflavoredNOW Sportsno amount
- Soy Protein Isolate UnflavoredNOW Sports · off the marketno amount
- Soy Protein Natural Vanilla FlavorGNC Natural Brandno amount
- Soy Protein PowderVital Nutrients · off the market3.6 g
- Soy Protein Powder Creamy ChocolateDaVinci Laboratories Of Vermontno amount
- Soy Protein Powder Unsweetened Natural VanillaVitaCeutical Labsno amount
- Soy Protein Powder Unsweetened Natural VanillaVSN Vital Strength Nutrition · off the marketno amount
- Soy Protein UnflavoredTwinlab CleanSeriesno amount
- Soy Protein UnflavoredGNC SuperFoodsno amount
- Soy Protein Unflavored/UnsweetenedGNC Natural Brandno amount
- Soy Protein Vanilla Isoflavone PowderMartin Avenue Pharmacy0.5 g
- Soy SentialsReliv2 g
- SoySentialsReliv · off the market2 g
- SoySentials Vanilla Ice Cream FlavorReliv2 g
- SP CompleteSP Standard Process · off the market3 g
- SP Complete Dairy FreeSP Standard Process · off the market4 g
- SP Complete VanillaSP Standard Process4 g
- SP Detox BalanceSP Standard Process4 g
- Sparkling ColaCelsius2 g
- Sparkling OrangeCelsius2 g
- Sparkling WatermelonCelsius2 g
- Sparkling Wild BerryCelsius2 g
- Spartan Whey Apple Cinnamon CerealSparta Nutrition · off the marketno amount
- Spartan Whey Cinna CrunchSparta Nutrition · off the marketno amount
- Spartan Whey Dippin' Dots Banana SplitSparta Nutrition · off the marketno amount
- Spartan Whey Fruity CerealSparta Nutrition · off the marketno amount
- Spartan Whey Marshmallow CerealSparta Nutrition · off the marketno amount
- Specialized Formula CollagenNature's Bounty Optimal Solutions · off the market1 g
- Spectra GreensDaVinci Laboratories Of Vermont · off the market3 g
- Spectra GreensDaVinci Laboratories · off the market4 g
- Spectra Infinite NutritionDaVinci Laboratories5 g
- Spectra Multi AgeDaVinci Laboratories2 g
- Spectra Oranges With CoQ10DaVinci Laboratories Of Vermont · off the market2 g
- Spectra Oranges with CoQ10DaVinci Laboratories2 g
- Spectra ProbioticIntegrative Therapeutics · off the market1 g
- Spectra PurplesDaVinci Laboratories Of Vermont · off the market3 g
- Spectra PurplesDaVinci Laboratories2 g
- Spectra RedsDaVinci Laboratories Of Vermont · off the market2 g
- Spectra RedsDaVinci Laboratories2 g
- SpectrabioticNew Earth · off the market1 g
- Spectrabiotic Full Spectrum ProbioticNew Earth Wild Essentials · off the market1 g
- Spectrum VibranceVibrant Health1 g
- Spike Shooter 4-Pack BoxSpikeno amount