... 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 ... .Storage: store in cool & dry placeShelf Life: 2 years Top Quality Senna Leaf Extract