White kidney bean extract
What it is
Contains alpha-amylase inhibitor phaseolamin, which partially blocks dietary starch digestion. Meta-analyses of RCTs show modest weight loss (1–2 kg over 4–12 weeks) and blunted post-meal glucose spikes when taken before starchy meals. Effect is dose-dependent and highly variable across products due to standardisation differences. No effect on fat or protein digestion. A mechanistically credible carbohydrate management adjunct — not a substitute for dietary changes.
Dose
500–1,500 mg standardised extract taken 5–15 minutes before carbohydrate-containing meals
Time of day & tips
Timing is critical — must be taken just before eating; product standardisation varies widely; not a licence to overeat starch
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