Research

Hormonal

A proprietary white bean alpha-amylase inhibitor (Phase 2) causes significant weight loss and reduces post-prandial blood glucose spikes by inhibiting starch digestion.

Take 500-1000mg of white bean extract (Phase 2) 15-30 minutes before meals containing carbohydrates. This blocks the enzyme that breaks down starch, leading to less calorie absorption and lower blood sugar spikes. It works best if you eat a moderate-to-high carb diet.

ModerateSupportsMEDIUM confidence
A specific and proprietary product named Phase 2® Carb Controller... has demonstrated the ability to cause weight loss with doses of 500 to 3000 mg per day... Clinical studies also show that Phase 2 has the ability to reduce the post-prandial spike in blood glucose levels.
Marilyn Barrett et al. · Nutrition Journal · 2011

Why this rating

The paper is a review of multiple studies, including RCTs, but notes some studies lacked between-group analysis or had small sample sizes.

Source

A proprietary alpha-amylase inhibitor from white bean (Phaseolus vulgaris): A review of clinical studies on weight loss and glycemic control

Marilyn Barrett et al. · Nutrition Journal · 2011

DOI 10.1186/1475-2891-10-24

narrative_reviewCited 264×
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DOI resolved against Crossref · corpus check 2026-06-10

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