Xerisan ASA is one of the most promising new diet pills available on the US market. One of the main ingredients in Xerisan, Phaseolus Vulgaris, has in recent studies been shown to act as an effective blocker of the alpha-amylase enzyme, which is an enzyme required for the metabolism of carbohydrates. This is one of the main reasons for the remarkable early test results of Xerisan. Although Xerisan has just been launched on the US market in January 2006 the effects of some of the ingredients have already been published in the American Journal of Clinical Nutrition. The product has a significant potential without adverse effects.