We use essential cookies (authentication, your saved goals/stack) by default. With your permission we'll also enable privacy-respecting analytics (Vercel Web Analytics, anonymous load-time metrics) and error-replay diagnostics (Sentry — DOM snapshots only when an error fires) so we can fix bugs faster. Learn more about cookies

Wkb3.0

White Kidney Bean Extract Research

Mostly mechanism / observationalModerate safety

3 peer-reviewed studies

What the evidence says

Mostly mechanism / observational

Most White Kidney Bean Extract studies are mechanism or observational rather than RCTs that measure a clinical effect — keep findings provisional.

Most evidence is from medium-quality meta-analyses and randomised trials published 2007–2014 with a typical study size of 60 participants.

Based on 3 studies · 1 meta-analysis · 2 RCTs · 60 total participants

Confidence

Moderate

By outcome

Weight managementInconsistent; meta-analysis found no significant weight loss vs placebo, though some small trials report modest fat/weight reductions · 4-12 weeks (if any)
Mostly mechanism / observational3 studies
Safety profile
Too few graded studies1 study

Older research base

Newest study from 2014 · Latest meta-analysis: 2011

20072014

1Meta-Analysis2011

A meta-analysis revealed a statistically non-significant difference in weight loss between P. vulgaris and placebo groups; the poor quality of the included RCT prevents us from drawing any firm conclusions.

Onakpoya I, Aldaas S, Terry R, Ernst E. · Br J Nutr (2011)

Of 11 eligible trials, 6 were included; all had serious methodological flaws
Pooled weight loss was NOT statistically significant versus placebo (MD -1.77 kg, 95% CI -3.33 to 0.33)
A significant body-fat reduction was found (MD -1.86 kg) but with heterogeneity between trials

View source

2RCT2014

The IQP-PV-101 group lost a mean of 2.91 kg in body weight compared with 0.92 kg in the placebo group.

Grube B, Chong WF, Chong PW, Riede L. · Obesity (Silver Spring) (2014)

Double-blind 12-week weight-loss phase plus 24-week open-label maintenance, all on a mildly hypocaloric diet
The extract group lost ~2.91 kg vs ~0.92 kg for placebo (a roughly 2 kg net difference)
No serious or related adverse events over 36 weeks

View source

3RCTn=60 · small study2007

Subjects receiving Phaseolus vulgaris extract had significantly greater reduction of body weight, BMI, and fat mass compared to placebo over 30 days.

Celleno L, Tolaini MV, D'Amore A, Perricone NV, Preuss HG. · Int J Med Sci (2007)

Small randomized double-blind placebo-controlled trial (n=60) over just 30 days
Reported significant reductions in body weight, BMI, fat mass, and waist/hip/thigh circumference vs placebo
Very short duration and small sample; author list includes supplement-industry-affiliated names (industry-linked)

View source

View in Research Library

White Kidney Bean Extract Research

Mostly mechanism / observational

The efficacy of Phaseolus vulgaris as a weight-loss supplement: a systematic review and meta-analysis of randomised clinical trials.

Weight reduction and maintenance with IQP-PV-101: a 12-week randomized controlled study with a 24-week open label period.

A dietary supplement containing standardized Phaseolus vulgaris extract influences body composition of overweight men and women.