Per serving - 500 mg
White kidney bean (Phaseolus vulgaris) extract is one of the most potent natural carb blockers known to man, with an abundance of clinical research demonstrating it's efficacy for reducing the absorption of calories from complex carbohydrates.
In fact, a recent clinical trial showed that subjects supplementing with white kidney bean extract twice a day lost 7 lbs more than those in the placebo group in just four weeks (despite eating equal amounts of carbohydrates).
It is now well-documented that certain glycoproteins in white kidney have inhibitory actions on the enzyme known as alpha-amylase, which is responsible for breaking down complex carbohydrates into simple sugar molecules. By doing this, white kidney protein effectively blocks the absorption/digestion of carbohydrates, thereby reducing calorie intake.
It's key to note that generic white kidney bean extracts have been shown to be ineffective for blocking carbohydrate intake, mainly because they often lack a nominal amount of active constituents to produce beneficial results.
This is why BLOCK-XT includes patented Phase 2® White Kidney Bean Extract, which is standardized and purity tested to ensure efficacy.