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Considered one of the herbal laxatives, senna (Cassia senna or Cassia angustifolia), is a common ingredient in teas as well as capsule and tablet preparations. Senna leaves contain the active ingredients sennoside A and B, and also small amounts of free anthroquinones. Sennosides are generally cathartic, but can also be purgative (stimulation of peristalsis). For most people, senna can act as a short-term laxative, for the temporary relief of constipation. Long-term use of this, or any laxative, is not usually recommended without supervision of a physician.
Chronic abuse can lead to a variety of complications such as chronic diarrhea with nutrient loss and excessive electrolyte loss/imbalance. Although uncommon, allergic reactions to senna have been reported.
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