Stool form and regularity
Bariatric Fusion GLP-ONE Support Prebiotic Fiber Powder
An unflavored once-a-day powder with 6 g of fiber from resistant potato starch and partially hydrolyzed guar gum plus a heat-inactivated postbiotic, aimed at bariatric and GLP-1 users.
- Format
- Powder, once a day
- Type
- Fiber, prebiotic and postbiotic
- Cost
- $1.35 a day
- Customer rating
- 4 out of 5 from 94 ratings from Amazon
What the accounts we could find say
- Normal bowel movements for people who found other fibers ineffective
- Mixing into smoothies, yogurt or oatmeal
- Being unflavored
There is not enough independent feedback here to call those themes reliable. Low review confidence — the brand’s 4.4 from 11 reviews is shown only on its own page through a review widget, Amazon shows 4.0 from 94 ratings with no readable text, Trustpilot has one review, and no independent retailer text was read.
Why it might work
Resistant potato starch and partially hydrolyzed guar gum are fermentable fibers: bacteria in the large intestine break them down into short-chain fatty acids such as butyrate, and the fibers add bulk and soften stool. Soluble fiber has the stronger trial record for IBS symptoms, while the insoluble half has little. The brand says the fermentation products raise the gut hormone GLP-1 and that the blend inhibits the enzyme DPP-IV, but no trial of this product tests either. Fermentable fiber can cause gas, especially if started quickly, and fiber after bariatric surgery needs fluids and gradual increases because bezoars and blockages are documented in people with altered stomachs. The label does not say how to start or when after surgery.
What the research supports
No trial of this formula was found. The branded ingredients have separate trials: a 4-week placebo-controlled trial of Solnul resistant potato starch at 3.5 g and 7 g in healthy adults changed gut bacteria and stool form but not bloating or gas scores, a 12-week trial of 6 g of partially hydrolyzed guar gum in 108 people with IBS improved bloating against placebo, and a 76-person trial of the postbiotic changed gut microbiome species at what a trade report gives as 300 mg. The label has 4.7 g of Solnul, 3.4 g of the guar fiber and 90 mg of the postbiotic, so the guar and postbiotic amounts are below those trial doses, and the GLP-1 and gas claims have no trial of this blend behind them.
What the label discloses
The panel lists each ingredient with its amount and no proprietary blend: 6 g of fiber (3 g soluble, 3 g insoluble) per 8 g scoop, with 4.7 g Solnul, 3.4 g Sunfiber and 90 mg Keystone Postbiotic. The two bacteria are named with strain designations (L. plantarum 276 and L. rhamnosus GG) but are heat-inactivated, with no live count. The brand says it is third-party tested in an NSF-certified facility without naming a laboratory, and the label gives no allergen or gluten statement.
Who this tends to suit
We match this product to people reporting irregular bowel habits, constipation and general abdominal discomfort. It fits someone whose priority is a steady daily routine or regularity. Whether it is the best fit for you depends on the rest of your answers — what you have already tried, what format you will take, and anything that has to be ruled out.
Where it may not fit
The label supports vegan and no added sweeteners. We flag this product for anyone pregnant or breastfeeding or taking prescription medication, and the quiz removes it rather than recommending it in those cases. That is a caution about who should be deciding, not a claim about the product. A powder only works if you will take it once a day, every day.
Side effects and what to be aware of
Reviewers report that the powder does not dissolve well, has a taste for some, and made one person nauseated; no one in the small set of reviews mentions gas or bloating relief. The label advises asking a healthcare practitioner if pregnant, nursing, on medication or with a medical condition, and gives no after-surgery guidance or fluid warning beyond taking it with a beverage.
Common questions
Does Bariatric Fusion GLP-ONE Support Prebiotic Fiber work?
No trial of this exact powder was found. Its ingredients have separate trials: Solnul at 3.5 g and 7 g for 4 weeks changed gut bacteria and stool form in healthy adults, and 6 g of partially hydrolyzed guar gum improved bloating in 108 people with IBS over 12 weeks. The label has 4.7 g of Solnul and 3.4 g of the guar fiber, and the claims about GLP-1 and appetite have no trial of this blend behind them.
Is it safe to take after gastric bypass or sleeve surgery?
The label says only to take one scoop with a beverage and to ask a healthcare practitioner if you take medication or have a medical condition; it gives no after-surgery timing. Bezoars and blockages are documented after bariatric surgery, and clinic handouts advise adding fiber gradually, with fluids, after checking with your bariatric dietitian. Intact guar gum caused obstructions in an older diet pill; this product uses partially hydrolyzed guar, which was not found studied for that risk.
Does it cause gas or bloating, or help with gas pains?
The brand calls it a non-bloating formula, but resistant starch and guar are fermentable fibers, and fibers can cause bloating or gas if intake rises too quickly. In a trial of the potato starch ingredient, bloating and gas scores did not change significantly, and in an IBS trial 6 g of the guar fiber lowered bloating and gas scores against placebo. A gas-pains ad from February 2025 predates this product and does not name it.
How much does it cost?
One 20-serving jar is $26.99 on the brand site and Vitacost, about $1.35 a day, or $24.29 (about $1.21 a day) on a 10% subscription. Brand shipping starts at $8.50 under $100, which brings one jar to about $35.49, or $1.77 a day. The Amazon listing showed no price when read.
How do I cancel the subscription or return it?
The brand says cancelling a Subscribe & Save plan is free at any time, and 10% off applies to every order. Returns are for unopened product within 30 days, with an authorization number from customer care and return shipping paid by you. One reviewer had to ask the company to hold the next shipment after ordering three jars.
Before you take this. Speak to a doctor or pharmacist first if you are pregnant or breastfeeding, or taking prescription medication. Nothing on this page is medical advice, and no supplement diagnoses, treats, cures or prevents disease.
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Related reading
Background on how this type of product works, read from the trial evidence.