Benefits
Carbohydrate blocking
By inhibiting starch-digesting alpha-amylase, the extract reduces the sugar and calories absorbed from starchy foods.
Weight management
White kidney bean alpha-amylase inhibitors have supported weight and fat loss in randomized research as part of a calorie-controlled approach.
Post-meal glucose support
Slower starch digestion blunts the rise in blood sugar after a starchy meal.
Mechanism of action
Alpha-amylase inhibition
Phaseolamin binds and temporarily inactivates alpha-amylase, slowing the breakdown of starch into absorbable sugars.
Reduced caloric absorption
With less starch digested in the small intestine, some passes onward undigested, lowering the meal's effective calorie load.
Clinical trials
12-week double-blind placebo-controlled randomized trial of a white kidney bean alpha-amylase inhibitor on weight and fat loss. (Jäger et al. 2024, Scientific Reports)
Adults.
The white kidney bean inhibitor promoted weight and fat loss versus placebo with acceptable safety.