Senna Leaf (Cassia Angustifolia or Cassia acutifolia in Latin); Senna is a shrub native to Egypt, Sudan, Nigeria and Nubia in North Africa, as well as India, Pakistan and China, Sennas are herbaceous sub shrubs and both varieties used, Alexandrian and Tinnevelly, have desert origins. Sennosides is extrated from senna leaf. 

1) Cathartic effect:senna infusion contains anthraquinone derivatives, its cathartic effect and irritation more than other laxatives.
2) Antibacterial inhibition: senna extract alcohol resistant variety of bacteria such as staphylococcus, diphtheria bacillus, typhoid bacillus, paratyphoid bacillus, and escherichia coli, the water extract useful only for Salmonella typhi.
3) Hemostasis: senna powder can increase platelet and fibrinogen, reduced clotting time, recalcification time, prothrombin time and blood clot contraction time, help to stop the bleeding
4) Muscle relaxation: senna can block acetylcholine at the motor nerve terminals and skeletal joints, so that muscle relaxation