Beleric (BelericMyrobalan, Ink Nut) is a big-sized perennial tree commonly found in tropical areas. In traditional Thai medicine
it is used as laxative and expectorant for the relief of amoebic diseases, etc. Recently, research has shown that anthraquinone is the most important irritant herbal compounds. It significantly alters gastrointestinal motility to the extent. Beside, sennosides can inhibit the absorption of fluid from the gut and enhance laxative action. Therefore this type of herbs is used as laxatives, cathartics and purgatives.