Phaseolus vulgaris is extracted from the white kidney bean and is thought to inhibit the activity of alpha-amylase, thereby interfering with absorption of carbohydrates . Seven RCTs identified it between 2007 and 2014. However, none of these studies fulfilled criteria for low risk of bias across each category. Of these seven, five were conducted in Europe (71%), and the remaining were conducted in Asia. Funding sources were not revealed for three studies (43%); the remaining were funded by industry and local universities. Study duration ranged from 30 days to 24 weeks, and the number of participants in each arm ranged from 12 to 62. 2 Buy Fat Burner Supplements Online Mean age ranged from 22 to 66 years. The number of women in each arm ranged from 38% to 74%. Three studies reported significant weight loss compared with placebo, whereas three did not report such statistical changes (Supporting Information Table S14A-D).