Senna

Definition

Senna is a natural laxative derived from the leaves and pods of the Senna plant. It stimulates bowel movements by irritating the lining of the bowel, which leads to a laxative effect.

5 Must Know Facts For Your Next Test

1. Senna is classified as a stimulant laxative due to its mechanism of action on the intestinal walls.
2. It typically takes 6 to 12 hours for Senna to produce a bowel movement after oral administration.
3. Senna can be used to treat constipation and clear the bowels before diagnostic tests like colonoscopies.
4. Common side effects include abdominal cramping, diarrhea, and electrolyte imbalance with prolonged use.
5. Patients with certain conditions such as intestinal obstruction or Crohn's disease should avoid using Senna.

Review Questions

• What class of laxatives does Senna belong to?
• How long does it usually take for Senna to take effect?
• Name two common side effects associated with Senna usage.

Related terms

Stool Softener: A type of medication that helps soften stool by increasing water content, making it easier to pass.

Bulk-forming Laxative: Laxatives that absorb water into the intestine, increasing stool bulk and encouraging bowel movements.

Osmotic Laxative: Laxatives that draw water into the bowel from surrounding tissues, softening stools and prompting bowel movements.