DrFormulas White Kidney Bean Extract Carb Blocker 1000mg
A 1000 mg white kidney bean extract using Phase 2, the patented and clinically studied branded form, at 120 capsules for a stated 30-day supply and $13.57. It cites a specific study result — an average 6.4 lb loss over 12 weeks — alongside the appropriate caveat that results vary and it works with diet and exercise. Among the cheapest products in this directory, with a money-back guarantee.
Last reviewed · researched from the manufacturer’s published pages by Tom
What’s in it
Amounts are shown only where the manufacturer publishes them. Anything without a figure is undisclosed — and for an active ingredient, an undisclosed dose is the central problem with this category.
- White kidney bean extract (Phase 2)1000 mg
Patented branded extract described as reducing carbohydrate absorption
How the manufacturer says it works
DrFormulas describes it as an all-natural weight loss supplement featuring the patented, clinically studied Phase 2 white kidney bean extract that reduces carbohydrate absorption, stating that in one study subjects lost an average of 6.4 pounds in 12 weeks, that results may vary, and that it may assist weight control alongside a sensible diet and exercise programme.
What the evidence actually supports
Phase 2 is a genuine branded ingredient with a real mechanism: white kidney bean extract inhibits alpha-amylase, the enzyme that breaks down starch, so a portion of starch passes through undigested. That is a plausible and testable route rather than an invented one. The product publishes a specific dose of a named branded extract, cites a specific outcome with a stated duration, and pairs it with the correct caveats about individual variation and the need for diet and exercise. At $13.57 for a stated 30-day supply it is among the cheapest products in this directory, and a money-back guarantee is offered.
Where that evidence stops
The study is cited but not identified, so it cannot be read — and the Phase 2 literature overall is mixed, with several trials finding no significant effect and the positive ones generally small, short and supplier-funded. An average 6.4 lb over 12 weeks is modest and is an average, meaning many participants will have lost less or nothing. Alpha-amylase inhibition also has a practical consequence the page does not mention: undigested starch reaching the colon is fermented, which commonly causes gas, bloating and loose stools — an unpleasant combination for anyone already experiencing GLP-1 digestive symptoms. This is not a GLP-1 mechanism and has no relationship to that pathway.
Strengths and problems
Strengths
- Uses a patented, characterised branded extract at a published 1000 mg dose
- Cites a specific outcome with a stated duration and the correct caveats
- Among the cheapest products in this directory at $13.57 for a month
- Publishes a money-back guarantee
Problems
- The cited study is not identified, and the wider Phase 2 literature is mixed
- A 6.4 lb average over 12 weeks is modest, and averages hide non-responders
- No mention of the gas and bloating that undigested starch commonly causes
- Not a GLP-1 mechanism
- Directions, warnings, allergens and testing were not published on the page we captured
What the manufacturer publishes
Publishes 2 of 8 standard terms.
- Intended use
- Sold as a dietary supplement to assist weight control alongside a sensible diet and exercise programme, not as a treatment for any condition.
- Directions
- Not publicly disclosed on the pages we captured.
- Warnings
- Not publicly disclosed on the pages we captured.
- Allergens
- Not publicly disclosed on the pages we captured.
- Third-party testing
- Not publicly disclosed on the pages we captured.
- Pricing
- $13.57 for 120 capsules, a stated 30-day supply, at capture.
- Subscription
- Not publicly disclosed on the pages we captured.
- Refunds
- States results guaranteed or your money back.
- Shipping
- Not publicly disclosed on the pages we captured.
May suit
Someone curious about carb blockers who wants a branded extract at a published dose for very little money, and who can tolerate the digestive trade-off.
Do not use if
- You already have bloating, gas or loose stools on a GLP-1 — this can add to them
- You have diabetes and adjust insulin to carbohydrate intake — altered absorption complicates dosing
- You are pregnant or breastfeeding
Frequently asked
Do carb blockers work?
Partially, and less than the name suggests. White kidney bean extract inhibits alpha-amylase, so some starch goes undigested — but only some, and only starch, not sugar or fat. The trial evidence is mixed, with positive results generally small and supplier-funded. The mechanism is real; the magnitude is modest. The predictable side effect is what happens to undigested starch in the colon, which is fermentation, gas and loose stools.
Sources
Captured . Manufacturer pages change — check the current version before relying on anything.