US
THORNE

THORNE FiberMend Prebiotic Fiber Powder 30 Servings

  • 30 servings, 11.6 ounces
  • Arabinogalactan prebiotic fiber
  • Unflavored powder
  • Third-party contents certified
  • Soy free
  • 12 ounces, 4.86 x 4.86 x 6.18 inches

Last refreshed Sep 11, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

An unflavored prebiotic fiber with third-party contents certification, described as gentle on the gut. Fiber grams and the full ingredient list are not in the listing.

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ASIN: B00BGJ7EBCCategory: Fiber Supplements

Overview

A morning glass of water or smoothie is where Thorne FiberMend goes: an unflavored prebiotic fiber powder built around arabinogalactan. It supports regularity, and Thorne describes it as well tolerated without bloating, cramping or gas.

An unflavored, gentle prebiotic with third-party contents certification is the reason to buy. Fiber grams and serving size are not in the listing, and the full ingredient list is not detailed.

Who it's for

People who want fiber without bloating or taste fit here. Shoppers comparing fiber grams should check the label first.

Pros and cons

Pros
  • Prebiotic fiber for gut health
  • Described as well tolerated
  • Third-party contents certification
Cons
  • Fiber grams and ingredients not listed

Performance notes

Arabinogalactan is a prebiotic fiber that feeds gut bacteria, which is how it supports regularity. Results build with daily use, and the listing gives no fiber amount to plan around.

Specifications

BrandTHORNE
Dimensions & fit
Net weight11.6 ounces
Item weight12 ounces
Item dimensions4.86 x 4.86 x 6.18 inches
Capacity & performance
Age Range DescriptionAdult
Other details
Item FormPowder
FlavorUnflavored
Servings per container30
Primary Supplement TypeArabinogalactan
Container TypeBottle
CertificationThird-party contents certified
Free fromSoy
Product BenefitsGut Health Liver & Detox

Frequently asked questions

Is Thorne FiberMend a laxative?

No. It is a prebiotic fiber powder that promotes regularity.

Does Thorne FiberMend cause bloating?

Thorne describes it as well tolerated, with no bloating, cramping or gas.

What does the FiberMend contents certification mean?

It has been third-party tested to confirm what is in the package matches the label.