What does senna mean?
Senna is the name of a group of flowering plants in the pea family and, more commonly in everyday English, a herbal laxative prepared from their dried leaves or pods. Its stimulant action encourages contractions in the colon, helping move stool through the bowels. Senna may be sold as tablets, capsules, tea, or a preparation made from the pods, and has long been used in both traditional medicine and modern over-the-counter remedies. Although it can be effective for occasional constipation, it is usually intended for short-term use because it may produce abdominal cramping, diarrhea, or dependence when taken repeatedly. The word can therefore refer to the plant itself, the medicinal material obtained from it, or a beverage made from the plant. Its long history and distinctive botanical source make senna a familiar example of a plant-derived medicine.
A plant of the pea family whose leaves and pods are used medicinally, especially as a stimulant laxative.
"The leaves of senna are dried and processed for use in laxative preparations."
The term may refer to the plant, its dried leaves or pods, or a preparation made from them.
A laxative made from the leaves or pods of the senna plant.
"She took a mild dose of senna before going to bed."
Senna is commonly used for short-term constipation relief and may cause cramping or diarrhea.
Usually used when referring to multiple plants, individual doses or preparations, or separate portions of senna.
"The pharmacist explained the differences between the various sennas."
Senna has been used as a laxative for centuries, from ancient Egyptian medicine to modern pharmacy shelves.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does senna come from?
The English word senna comes through Latin and ultimately Arabic, where sanā referred to the plant and its medicinal use. The name entered European medical and botanical writing during the medieval period and became established in English for the dried leaves and pods used as a purgative. Modern senna medicines continue to use the plant material in forms derived from the traditional preparations.
Related word forms
How senna is actually used
In medicine, senna is generally used for short-term relief of constipation because repeated use can cause intestinal dependency or electrolyte imbalance. The name can refer to the plant, its dried medicinal material, or a tea made from it.
Easily confused with senna
Senna is a plant and laxative, whereas a senator is a member of a legislative body.