White Kidney Bean Extract is studied for its ability to inhibit alpha-amylase, an enzyme involved in breaking down dietary starch, which may reduce how much carbohydrate the body absorbs from a meal.
The brand's own marketing material lists this as the first of eight ingredients, framed around glucose metabolism and calorie intake.
As with the other seven ingredients, MetaboSwitch's per-serving amount isn't published anywhere we could confirm — the marketing graphic names it without a milligram figure.
Where it sits in the formula: one of eight ingredients named in MetaboSwitch's marketing graphics, alongside Green Tea Extract, Garcinia Cambogia, Chromium Picolinate, Resveratrol.