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White Kidney Bean Extract

White Kidney Bean extract, or Phase 2, is a dietary carbohydrate blocker similar to chlorogenic acid and is sometimes used alongside carb containing meals to reduce the absorption of carbohydrates. It does appear to work, but its potency is quite unreliable and relatively subpar.

Our evidence-based analysis on white kidney bean extract features 13 unique references to scientific papers.

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Summary of White Kidney Bean Extract

Primary information, health benefits, side effects, usage, and other important details

White Kidney Bean extract (also known by the brand Phase 2) is a carbohydrate blocker that works by inhibiting the digestion of starches.

By inhibiting their digestion, starches that are eaten are either left undigested in the gut or the amount of which is digested is reduced. These starches are either excreted and their calories not absorbed, or they are given to colonic bacteria to ferment (eat).

When given to people who are not otherwise on a diet (during their highest carb containing meal), white kidney bean extract is able to reduce body weight and body fat levels similar to simple caloric restriction. In cases of overfeeding, white kidney bean extract can alleviate the expected increase of body fat gain and blood parameters like triglycerides and blood glucose over time.

It is also possible that white kidney bean extract can protect against colon cancer in the same manner as soluble fiber.

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How to Take

Medical Disclaimer

Recommended dosage, active amounts, other details

Phase 2 tablets (800mg in weight comprised of 445mg phaseolus vulgaris) appear to be effective in reducing carbohydrate absorption. These tablets must be taken alongside a carbohydrate containing meal.

It is unsure if higher doses are significantly better at blocking intestinal absorption of carbohydrates or not.

Things to Note

Is a Form Of

Primary Function:

Also Known As

Phaseolus Vulgaris, Phase 2 (Brand name)

  • White kidney bean extract is non-stimulatory.

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Click here to see all 13 references.