GoBiotix Prebiotic Fiber Boost Bundle – 5g FOS Powder + Travel Packs Review

Prebiotic Fiber Boost feeds beneficial gut bacteria, supports regularity, and mixes into the daily drink with zero sugar and no gritty fiber taste. The product is built around FOSSENCE P95, a short-chain fructooligosaccharide prebiotic fiber derived from fermented cane sugar, and the page describes a clinically studied 5g FOS dose per serving. The powder is presented as tasteless and odorless, and it dissolves in coffee, water, juice, smoothies, or any other beverage. The label states zero sugar, gluten-free, vegan, and non-GMO status. The page offers a bundle choice of one bottle of each at $64.99, two bottles of each at a discounted price, or three bottles of each at a larger discount. The How To Use section recommends one scoop daily mixed into a drink, with one serving per day to start and consistent use for best results, taken morning, afternoon, or evening. The ingredients list shows only FOSSENCE P95 Short-Chain Fructooligosaccharides and Silicon Dioxide. The page explains that FOSSENCE P95 nourishes beneficial bacteria such as Bifidobacterium and Lactobacillus, while silicon dioxide is an anti-caking agent that keeps the powder free-flowing. The Science section explains that prebiotics feed bacteria already in the gut, unlike probiotics, which add bacteria. The Clinical Research section says FOS has been studied for microbiome support, fermentation, and glycemic response, and it cites a study where daily FOS doses including 5g increased beneficial gut bacteria, and another where FOSSENCE did not raise post-meal glucose or insulin when consumed alone. The certifications listed are non-GMO, vegan, gluten-free, keto-friendly, GMP-compliant manufacturing, and a FSSC 22000 certified facility for FOSSENCE. The What's Not In It list includes no sugar, no artificial sweeteners, no flavoring, no gluten, no GMOs, no dairy, no soy, no stimulants, and no fillers. The page also states that the product is third-party tested, free from heavy metals, and has a certificate of analysis available. The FAQ section says the product is plant-based and designed to feed the microbiome, and that people often notice reduced bloating and improved regularity within a few days of consistent use. It describes the product as an option for people on meds, while advising them to consult a doctor first. The page also says the product is unflavored and is meant to be mixed into a drink once a day.

Product Focus: Kidney HealthAlso covers:DigestionImmune system
Tier ⓘ
Members see this product's tier and why. Tiers run from 1, the strongest evidence, to 5. How we grade →
Evidence ⓘ
How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.
Positive Reviews
Biohacker Mentions

Study, Trial or Testing Result Summary

MembersHuman studies

This product gives 5.4 grams of short-chain fructooligosaccharides a day, the 12 grams used in the kidney trials of this fiber. In 50 people with chronic kidney disease, 12 grams daily for 3 months gave only a , non- trend toward levels of one waste toxin and change in kidney filtration compared with placebo. …

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Review Totals and Summary

Members13,421 reviews
13,421 reviews · Gobiotix 4,576 · Walmart 4,243 · Shop.app 26

This GoBiotix Prebiotic Fiber Bundle, a powder supplement, has garnered approximately 4576 ratings across various stores, with an reception where of star ratings are 4 or 5. This summary focuses solely on the powder form, excluding any other product forms like gummies or capsules. **** customers report in their digestive . …

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Biohacker Summary

MembersWhat our biohacker panel says

One panelist has grown cautious over the years: early on he called it a halfway decent prebiotic, but later he that taking it as a concentrated source without variety, even at 16 grams a day, can one type of gut bacteria while cutting others that make short-chain fatty acids, gut diversity. He also that it can affect glucose handling and the mucus lining of the gut, and he called it a useless fiber that butyrate in a study. …

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RAL Summary

MembersThe tier and why

The tier rests on a 200-person trial of an inulin and oligofructose blend, short-chain fructooligosaccharides, while the trials of fructooligosaccharides itself found change in kidney filtration. …

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More Details

MembersBody systems · Combine with · Possible side effects

Body systems: Urinary system, Digestive system, Immune system. Combine with and possible side are for members.

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Supplement Facts

Fructooligosaccharides 5 g
Supplement Facts
Serving Size 1 Servings (5.4g)
Servings Per Container 35
Amount Per Serving% Daily Value
Calories10
Total Carbohydrate5 g2%
Dietary Fiber5 g18%
Total Sugars0 g†
Added Sugars0 g0%
Fructooligosaccharides (FOSSENCE® P95)5 g†
* Percent Daily Values are based on a 2,000 calorie diet.
† Daily Value not established.

Other ingredients: Other ingredients: Silicon Dioxide.

Label source: Gobiotix · Report a label change

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Graded October 28, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.