1 oz. Senna Leaf Powder (Senna alexandria) Also known as Senna alexandrina, Alexandrian senna, Khartoum senna, and Tinnevelly senna. Introduction The sennas are scrubby desert plants of North Africa. Senna has been used around the world for thousands of years as a laxative. Constituents 1-3% hydroxyanthracene glycosides, mainly sennosides A and B, which are rhein-dianthrones, and smaller amounts of sennosides C and D, which are rhein-aloe-emodin-heterodianthrones; naphthalene glycosides; flavonoids (derivatives of kaempferol and isorhamnetin); 10-12% mineral matter; 7-10% mucilage (galactose, arabinose, rhamnose, and galacturonic acid); about 8% polyol (pinitol); sugars (glucose, fructose, and sucrose); and resins. Parts Used Dried leaf, and/or pods. Typical Preparations Used as a powder, c/s, capsule or as a tea.