PlainVitamins

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.

Fiber: products by amount per serving0.1 g0.3 g1 g3 g10 g
Fiber: products by amount per serving0.1 g0.3 g1 g3 g10 g
Fiber: products by amount per serving0.03 g0.1 g0.3 g1 g3 g10 g
Fiber: products by amount per serving0.03 g0.1 g0.3 g1 g3 g10 g
Fiber: products by amount per serving0.03 g0.1 g0.3 g1 g3 g10 g
The amounts printed most often
Amount per servingProductsFor example
1 g2,773 Calcium Magnesium Potassium (Vitamin World); Highest Lignan Content Flax Oil (Barlean's Organic Oils); Spiru-Pro Soy Protein Drink With Spirulina Natural Vanilla (Vitamin World)
2 g1,090 Apple Pectin Plus Vitamin C (Vitamin World); Warrior Whey Chocolate (Tapout Sports Nutrition); Fiber Soft Chews Natural Citrus Flavor (GNC Natural Brand)
3 g732 Gaspari's Real Mass Strawberry Milkshake (Gaspari Nutrition); IntraPro Double Chocolate Flavor (Gaspari Nutrition); IntraPro Delicious Vanilla Flavor (Gaspari Nutrition)
4 g490 FibroLean Natural Konjac Root Glucomannan 1000 mg (Vitamin World); Fiber Force 6 (Vitamin World); Nitro-Tech Crunchy Chocolate Crisp (MuscleTech)
5 g467 Maximum Nutrition Vanilla Bean (GNC Mega Men); Maximum Nutrition Vanilla Creme (GNC Women's Ultra Mega); Colon Care Plus (Vitamin World)
6 g283 Clear Mixing Super Fiber With Probiotics (GNC Natural Brand); Gaspari's Real Mass Chocolate Ice Cream (Gaspari Nutrition); Gaspari's Real Mass Rich Vanilla Milkshake (Gaspari Nutrition)
7 g143 OptiCleanse Plus Rice Raspberry Lemonade (XYMOGEN); OptiCleanse Plus Rice Original (XYMOGEN); Healthy Protein Orange Cream (FRS)
0.5 g108 Warrior Whey Vanilla (Tapout Sports Nutrition); Astragalus 500 mg (Vitabase); Nitro-Tech Hardcore Pro Series Cookies & Cream (MuscleTech)
8 g104 Sport Milk Chocolate (GNC Mega Men); Sport Vanilla Bean (GNC Mega Men); Active Milk Chocolate (GNC Women's Ultra Mega)
10 g79 OptiGlycemiX Chocolate Mint (XYMOGEN); Monster Milk Lactose Free Chocolate (CytoSport); Muscle Milk Brownie Batter (CytoSport)

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).

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.

Median fiber per serving by the year the label entered DSLD (years with 20+ products)
YearProductsMedian per serving
20111302 g
20123132 g
20134892 g
20144962.5 g
20154762 g
20163672 g
20174131 g
20183962 g
20193632 g
20206772 g
20215352 g
20225052 g
20235911.5 g
20246721.9 g
20255641.2 g

Source: DSLD label entry dates and amounts, current labels.

In which products and brands?

Products listing fiber by DSLD product type

Fiber by product typeOther Combinations4,223Amino acid/Protein874Botanical with Nutrients638Botanical495Fiber and Other Nutrients398Non-Nutrient/Non-Botanical118Multi-Vitamin and Mineral (MVM)117Mineral60
Fiber by product typeOther Combinations4,223Amino acid/Protein874Botanical with Nutrients638Botanical495Fiber and Other Nutrients398Non-Nutrient/Non-Botanical118Multi-Vitamin and Mineral (MVM)117Mineral60
Fiber by product typeOther Combinations4,223Amino acid/Protein874Botanical with Nutrients638Botanical495Fiber and Other Nutrients398Non-Nutrient/Non-Botanical118Multi-Vitamin and Mineral (MVM)117Mineral60
Fiber by product typeOther Combinations4,223Amino acid/Protein874Botanical with Nutrients638Botanical495Fiber and Other Nutrients398Non-Nutrient/Non-Botanical118Multi-Vitamin and Mineral (MVM)117Mineral60
Fiber by product typeOther Combinations4,223Amino acid/Protein874Botanical with Nutrients638Botanical495Fiber and Other Nutrients398Non-Nutrient/Non-Botanical118Multi-Vitamin and Mineral (MVM)117Mineral60

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 41 of 175), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

Where next?