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.

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).

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.

In which products and brands?

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

• 100% Whole Gains Protein Sweet MangoBioRhythm · off the market3 g
• 100% Whole Gains Protein Vanilla DelightBioRhythm · off the market4 g
• 100% Whole Grains Protein Seedless WatermelonBioRhythm · off the market3 g
• 14-Day Cleanse CitrusMetamucil3 g
• 15-Day Weight Loss Support Cleanse & FlushNature's Secret1 g
• 1:1 Protein Bars Black CherryMetragenix · off the market1 g
• 1Shot Protein Berry1Shot Protein · off the marketno amount
• 1Shot Protein Coffee1Shot Protein · off the marketno amount
• 1Shot Protein Mixed Berry1Shot Protein · off the marketno amount
• 1Shot Protein Tropical1Shot Protein · off the marketno amount
• 2 Capture With Natural Acacia FiberRenew Life4 g
• 2-Day Diet Detox Natural Berry FlavorSuperJuice3 g
• 2-Day Fast Formula Chocolate FlavoredBeachbody Nutritionals2 g
• 2-Day Fast Formula Vanilla FlavoredBeachbody Nutritionals1 g
• 24/7 Beauty Collagen Protein Raspberry FlavoredIVL2 g
• 24kReliv3 g
• 24K Mixed Berry FlavorReliv3 g
• 2:1 Cookies And CreamAnti-Aging Essentials · off the marketno amount
• 2:1 OatmealAnti-Aging Essentials · off the market6 g
• 3 In 1 MultiHealth Fiber!Metamucil4 g
• 3-in-1 FiberMetamucil2 g
• 3-in-1 Joint FormulaIrwin Naturals1 g
• 3-Whey Cinnamon SwirlBlackstone Labsno amount
• 30 Day Night Slim Skinny TeaTotally Products4 g
• 3:1 Protein Cookies Ice Cream SandwichMetragenix · off the market1 g
• 3D Energy Drink Grape3D Energy Drinksno amount
• 3D Energy Drink Liberty Pop3D Energy Drinksno amount
• 3D Energy Drink Pina Colada3D Energy Drinksno amount
• 3D Energy Drink Sunburst3D Energy Drinksno amount
• 4 in 1 MultiHealth Fiber!Metamucil5 g
• 4 in 1 MultiHealth Fiber! Orange SmoothMetamucil6 g
• 4 in 1 MultiHealth Fiber! Orange Smooth SinglesMetamucil3 g
• 4 in 1 MultiHealth Fiber! Original Coarse Fiber PowderMetamucil3 g
• 4 in 1 MultiHealth Fiber! Original Smooth Fiber PowderMetamucil3 g
• 4 in 1 MultiHealth Fiber! Sugar-Free Berry Smooth Fiber PowderMetamucil3 g
• 4 in 1 MultiHealth Fiber! Sugar-Free Orange Smooth Fiber PowderMetamucil6 g
• 4-in-1 Fiber on-the-go! OrangeMetamucil6 g
• 4-in-1 Fiber on-the-go! Orange Sugar-FreeMetamucil3 g
• 4-in-1 Fiber OrangeMetamucil14 g
• 4-in-1 Fiber Orange Sugar-FreeMetamucil6 g
• 4-in-1 Fiber Powder UnflavoredMetamucil3 g
• 40+ Heart DefenseLife · off the market0.243 g
• 5-Day Max CareGarden of Life Raw Probiotics10 g
• 5-HtpOnly Natural · off the marketno amount
• 50 Gram Slam XR Milk ChocolateGNC Pro Performance4 g
• 50/50 Formula-X Alpine VanillaApollon Nutritionno amount
• 50/50 Formula-X Dutch ChocolateApollon Nutrition2 g
• 50/50 Formula-X Peanut Butter CookieApollon Nutritionno amount
• 5:1 Chocolate Bars Chocolate CrunchMetragenix · off the market1 g
• 7-Day Cleanse With ProbioticsPure Genix1 g

Where next?

• Fiber gummies
• Check an amount of fiber
• Labels above the upper limit
• All ingredients