Family : Caesalpiniaceae

Plant Parts used :  Leaves & Pods

Chemical constituents :  The main constituents in Senna leaves & Pods are Sennosides A & B.  In addition, Sennosides C and D are also found in negligible amounts.  Free anthraquinones including aloe-emodin, chrysophanol and rhein with their glycosides are also present.

Pharmacology : The sennosides and other anthroquinone derivatives possess a laxative effect.  Sennosides and their natural metabolites specifically influence large intestinal motility.  Acceleration of colonic transport seems to be a major component of the laxative action.  Anthraquinone works by irritating the lining of the upper intestines which provokes reflex muscular activity in the colon resulting in a bowel motion. 

Therapeutic uses : Senna is used as natural & time tested laxative in traditional as well as modern systems of medicine.  Senna is a powerful cathartic used in the treatment of constipation, working through a stimulation of intestinal peristalsis.  In combination with Cinnamon, Ginger, Fennel etc., it can be used for easing nausea, biliousness, halitosis etc..