ColonBroom’s homepage carries some striking numbers — 83% lost weight, 82% reduced cravings. It also carries a footnote saying those came from a survey of a different product, and that no clinical trials have been conducted on anything else it sells. The GLP-1 Booster is anything else.
Product Overview
ColonBroom is a fibre and weight-management supplement brand with a wide range — the original psyllium product, ColonBroom Premium, fat burners, a detox line, greens, ACV gummies and the product reviewed here, the GLP-1 Booster.
The formula is listed as berberine, zinc, Polygonum cuspidatum extract and quercetin dihydrate. No amount is published for any of them. Directions are one pill 30 minutes before eating.
Pricing runs $49.99 for a single bottle of 30 servings against a listed price of $85.99, dropping to $34.74 a bottle on a three-bottle subscription and $25.83 on a six-bottle plan — advertised as savings of 42%, 60% and 70%.
Label, Ingredients, and Amounts
| Active ingredient | Amount per serving |
|---|---|
| Berberine | Not published |
| Zinc | Not published |
| Polygonum cuspidatum extract (resveratrol source) | Not published |
| Quercetin dihydrate | Not published |
| Manufacturer | ColonBroom |
|---|---|
| Serving size | 1 pill, 30 minutes before eating |
| Servings per container | 30 per bottle |
| Other ingredients | Not published |
| Intended use | Marketed for appetite control, reducing cravings and promoting metabolic health, targeting weight gain, overeating, cravings, energy and blood sugar |
| Directions | Take 1 pill 30 minutes before eating |
| Warnings | Not published |
| Allergens | Not published; stated as gluten-free and sugar-free |
| Pricing | $49.99 per bottle one-time against a listed $85.99 |
| Subscription options | $34.74 per bottle on a three-bottle plan delivered every 3 months, or $25.83 per bottle on a six-bottle plan delivered every 6 months |
| Refund policy | Not published |
| Shipping | Not published |
How the Manufacturer Says It Works
The product is presented as supporting “appetite control, reduce cravings, and promote metabolic health”, targeting weight gain, overeating, cravings, energy and blood sugar. It is badged “SCIENCE-BACKED” alongside non-GMO, no fillers, sugar-free, made in USA and gluten-free.
What is missing is any explanation of how the formula would boost GLP-1. The name makes a mechanistic promise, and the ingredient list does not obviously support it.
Berberine has real metabolic research behind it, mostly for blood glucose, and works largely through AMPK rather than GLP-1 secretion. Zinc is an essential mineral. Resveratrol and quercetin are polyphenols studied broadly for antioxidant and metabolic effects. None is an established GLP-1 secretagogue at supplement doses.
Compare that with Supergut, whose fibre-fermentation route to endogenous GLP-1 is a documented pathway even if the effect is modest. Here the GLP-1 in the product name is doing marketing work the formula does not underwrite.
Available Scientific Support
ColonBroom’s marketing leads with four figures: “83% lost weight within 10 weeks”, “82% reduced food cravings within the first week”, “90% saw significant relief from bloating by week two” and “83% reported higher energy levels by week three”.
The company’s own qualifier does the work here. Those results come from a “self-reported survey conducted over 10 weeks with ColonBroom Premium”, and it states plainly: “No clinical trials have been conducted on other ColonBroom products.”
The GLP-1 Booster is one of those other products. So by ColonBroom’s own account there is no trial behind it — while the product page badges it “science-backed” and cites no study at all.
We want to be fair about the disclosure itself: publishing that qualifier is more honest than omitting it, and a great many brands would not. The problem is placement. The percentages sit in large type on a homepage selling every product in the range, and the sentence that limits them to one of those products sits in small print underneath.
Even for Premium, a self-reported survey is the weakest form of evidence — no control group, no blinding, and outcomes recorded by the people who bought the product. On the ladder we use across these reviews, that sits at the bottom, below company-run clinical work and far below a randomised trial.
The review counts quoted — 12.3k for the GLP-1 Booster — measure sales volume and solicitation, not effect.
Limitations of the Evidence
The absence of amounts is the central problem. Berberine has a genuinely studied dose range — roughly 1000 to 1500mg daily in the research — and without a number on the label there is no way to know whether this product delivers something comparable or a fraction of it. Meo Nutrition publishes 1200mg; ColonBroom publishes nothing.
The pricing structure deserves a note too. A $85.99 “listed” price against a $49.99 everyday price, discounted to $25.83 on a six-bottle commitment, is a 70% saving measured against a number few buyers are likely ever to pay. The real comparison is $25.83 to $49.99 depending on how long you commit.
The directions also make the cost ambiguous. “One pill 30 minutes before eating” with 30 servings per bottle implies one meal a day; dosing before more than one meal would empty the bottle faster and change the monthly cost accordingly.
Finally: no third-party testing, no warnings, no allergen detail and no refund policy are published, and berberine’s real drug-interaction potential goes unmentioned.
Pros and Cons
Pros
- Names its four ingredients rather than hiding behind a proprietary blend
- Discloses that its headline survey covers ColonBroom Premium only, and that other products have no trials
- Berberine is a legitimate metabolic ingredient with real research behind it
- Clear directions and a stated 30 servings per bottle
- Non-GMO, sugar-free and gluten-free claims stated
- Carries the required FDA disclaimer
Cons
- No amount published for any of the four ingredients
- Badged "science-backed" while citing no study for this product
- By the company’s own footnote, no clinical trial has been conducted on it
- The headline percentages come from a self-reported survey of a different product
- None of the ingredients is an established GLP-1 secretagogue, despite the product name
- A $85.99 list price makes the advertised savings look larger than they are
- No third-party testing, warnings, allergens or refund policy; berberine interaction risk unmentioned
Who It May Be Best For
Difficult to recommend over a single-ingredient alternative. If berberine is what you want, a product that publishes its dose lets you check it against the research; this one does not.
Ask for the amounts before buying. Milligrams of berberine, zinc, resveratrol and quercetin per serving would turn this from an unknown into something comparable.
If you already use ColonBroom for fibre, note that this is a separate product with a separate formula — the fibre results do not carry across to it.
Who Should Avoid It
Skip it if you are expecting a GLP-1 effect. The name promises a mechanism the formula does not support, and the company states it has no trial behind the product.
Speak to a pharmacist first if you take prescription medication. Berberine has meaningful interaction potential — it can raise blood levels of drugs cleared through certain enzyme and transporter routes — and this label carries no warning about it at all.
Be wary of the six-bottle plan. Committing half a year to an undosed formula for the headline discount is a large bet on an open question.
Alternatives
Meo Nutrition Berberine publishes a 1200mg dose and cites five papers. Thorne Berberine-500 is the established-brand option. Supergut GLP-1 Daily Support has an actual GLP-1 mechanism behind its name. Our best GLP-1 supplements page ranks the category.
Frequently Asked Questions
Does the 83% weight-loss figure apply to the GLP-1 Booster?
No. ColonBroom’s own footnote states that figure comes from a self-reported survey conducted with ColonBroom Premium, and that no clinical trials have been conducted on other ColonBroom products. The GLP-1 Booster is a different product, so the number does not describe it.
What is actually in it?
Berberine, zinc, Polygonum cuspidatum extract (a resveratrol source) and quercetin dihydrate. The amounts of each are not published, so there is no way to tell whether any is present at a dose the research would support.
Do those ingredients raise GLP-1?
Not in any direct or well-established way. Berberine has genuine metabolic research behind it, largely for blood sugar, and zinc, resveratrol and quercetin are general metabolic and antioxidant ingredients. None is a recognised GLP-1 secretagogue at supplement doses, and the product name promises a mechanism the formula does not obviously deliver.
What does it cost?
$49.99 for one bottle of 30 servings against a listed price of $85.99, falling to $34.74 a bottle on a three-bottle subscription and $25.83 on a six-bottle plan. Directions say one pill 30 minutes before eating, which makes the true cost per day depend on how many meals you dose before.
Is it third-party tested?
Not stated. The page claims non-GMO, no fillers, sugar-free, gluten-free, made in the USA and "science-backed", but publishes no third-party testing, no certificate and no refund policy.
Supplement Disclaimer & Review Date
These statements have not been evaluated by the Food and Drug Administration. Dietary supplements are not intended to diagnose, treat, cure, or prevent any disease. Dietary supplements are not FDA-approved medications, are not reviewed by the FDA for safety or effectiveness before they go on sale, and are not a substitute for prescription treatment.
Nothing on this page is medical advice, and nothing here should be read as a promise of weight loss or of any particular result. Supplements can interact with prescription medications and are not appropriate for everyone. Talk to a doctor or pharmacist who knows your medical history before starting any supplement — particularly if you are pregnant or breastfeeding, take prescription medication, manage a chronic condition, or are already taking a GLP-1 medication.
Details about ColonBroom GLP-1 Booster come from the manufacturer's own published materials as of the date below. Ingredients, amounts, pricing, and policies change frequently — check the current label and product page before purchasing.
Last reviewed: September 6, 2026
Check the Current Label
Ingredients, amounts, pricing, and policies change. Verify against the current product page before buying.