Function: Senna's active ingredient, known as sennosides effect. The molecular components of micro-organisms in the colon which has been converted into other substances,Rhein anthrone, the material has a useful role in stimulating the activity of the colon (bowel movement to speed up and improve their digestion) and increased secretion of fluid. Sennosides effect of light and its effects spilled active metabolite Rhein anthrone could be considered for large water and electrolyte absorption, thereby increasing the intestinal contents of the volume and pressure. It will stimulate the colon forward-tightening campaign. In addition, the activity stimulated secretion of chloride to increase the role of the intestinal water and electrolyte. Electrolyte  transport in the activity of  these changes depend on the surface of the serous membrane calcium. Sennosides effect of the spilled light on the role of part of the  colon through the fluid and electrolyte secretion of the stimulus, and the ability to secrete the internal nature of the process of  the formation of prostaglandins as a   stimulus to control. Sennosides glycosides can be prepared enema, suppository or stool softener, into a block of mixed fiber laxatives to form a coalition cathartic.
 

Action:
1) It is used in the treatment of constipation,working through a stimulation of

intestinal peristalsis.

2) It also helps to temporaroly prevent fluid from being absorbed from the large  intestine,thus contributing to softer stools.