Checked against public sources on August 31, 2026 · LookCloser does not sell or recommend supplements.
Does the marketing hold up?
Every ingredient shows its amount · 8 ingredients listed. Every ingredient shows its real amount — nothing is hidden in a proprietary blend.
“Couldn’t verify” means we looked and found no public proof — not a mark against the product. Most supplement claims cannot be independently verified by anyone, so grey is the normal state of this industry.
| Calories | 7 |
|---|---|
| Total Carbohydrates | 3.5 g |
| Dietary Fiber (As SunFiber®, Partially Hydrolyzed Guar Gum) | 3.546 g |
| Sugars | 0 g |
| Bifidogenic Enzymes (Fiberase®) (from Aspergillus niger, Trichoderma longibrachiatum) | 54 mg |
| Cellulase | 2,500 CU |
| Hemicellulase | 5,500 HCU |
| Pectinase | 22 endo-PG |
Printed on the package: Gluten Free · Dairy Free · Soy Free · Non-GMO · Nut Free · Vegan
We read 8 lines from the package photograph. It is our transcript of the label, not the manufacturer’s panel, and it may be incomplete.
The public sources did not settle the marketing promises on this label.
Published research exists for ingredients in this formula. Whether this product’s doses match those studies could not be confirmed.
Ingredient research can support context, but it is not a trial of this exact product.
TruFiber is a powerful prebiotic fiber, designed to support probiotic growth and overall G.I. health.*
Headlines first. Open evidence only when you want the source trail.
Every ingredient shows its real amount — nothing is hidden in a proprietary blend.
The panel gives a per-ingredient amount rather than hiding quantities inside a proprietary blend, so each one can be compared to published research.
Locked evidence record →Open the full source-linked findingThese are evidence gaps, not strikes against the product.
Filed address
unit E, 1891 Steiger Lake Lane, Victoria, MINNESOTA 55386, UNITED STATES
USPTO identifies the public owner or applicant behind this brand wordmark. This does not by itself identify the product manufacturer or prove where the product was made. Open USPTO source ↗
We could not match an amount on this product to a studied range for the same ingredient, so these links are ingredient background rather than a measurement of this product.
Not a score. Studies disagree with each other and change over time, so this sits beside the evidence rather than counting toward it — it is here so you can read the sources yourself.
The panel lists 3.546 g of prebiotic fiber (inulin-type) per serving. Studies we found used 3 g–10 g a day, so this sits inside that range.
Study ranges differ between trials and change as research changes. This is background reading, not a pass, a failure, or a recommendation.
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Lowest New observed via Keepa on 2026-09-02.
View on Amazon ↗Open the brand storefront to search manually.
No defensible same-product page was saved from the brand catalog.
Check brand website ↗No matching product page was confirmed in the current record. Search results cannot be attached as this product until the UPC/GTIN matches.
Search iHerb ↗No matching product page was confirmed in the current record. Search results cannot be attached as this product until the UPC/GTIN matches.
Search Target ↗No matching product page was confirmed in the current record. Search results cannot be attached as this product until the UPC/GTIN matches.
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The summary stops at product-specific facts. The full report preserves every source, calculation, limitation, and unresolved check for review or sharing.
Record built September 03, 2026. Sources: source listing observed at check time · USPTO Trademark Search · Keepa exact-listing history · NIH / published research · certification and regulator records where available. LookCloser publishes evidence and gaps; it does not advise for or against any supplement. Evidence-based corrections welcome.