Sennosides are a mixture of anthraquinone glycosides (primarily sennoside A and B) extracted from the leaves and pods of senna plants (Cassia angustifolia or Cassia acutifolia). As a specialty chemical used in pharmaceutical applications, they function as stimulant laxatives to treat occasional constipation. They work by irritating the colonic mucosa and stimulating intestinal peristalsis, promoting bowel movements. This makes them effective for short-term relief of constipation, including in cases where straining should be avoided, such as after surgery or childbirth. They are also used to prepare the bowel for medical procedures like colonoscopies. Sennosides are commonly incorporated into over-the-counter laxative products and are typically administered orally in tablet, liquid, or herbal tea forms. As a reagent, they are supplied as a brown powder with a minimum assay of 20%. It is important to use them as directed, as prolonged use can lead to dependency, electrolyte imbalances, or laxative abuse syndrome.