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Dictionary · Drug

senna

A plant-based stimulant laxative that makes the bowel muscles push stool along.

SEN-uh noun

What it means

A laxativeLAK-suh-tivA drug that loosens stool or helps the bowels move, used to treat or prevent constipation.Full entry made from the senna plant (sennosides) that acts on the nerves of the colon. Taken at bedtime, it usually works in 6 to 12 hours. It is the usual choice to prevent constipation from opioid pain drugs, often with docusateDOK-yoo-sateA stool softener that lets water and fat mix into the stool so it is easier to pass.Full entry (Senokot-S). It can cause cramping, and the urine may turn yellow-brown or reddish.

For the nurse

Teach fluids, fiber and activity, and that long-term daily use without a reason should be avoided. Hold it and report if the client has diarrhea or severe belly pain.

At a glance

Drug classstimulant laxative
Brand namesSenokot, Ex-Lax; with docusate: Senokot-S
Also writtensennosides, Senokot, Ex-Lax

Related terms

opioid analgesic

A strong drug that relieves moderate to severe pain by acting on the brain and spinal cord.

constipation

Bowel movements that happen less often than usual, with hard, dry stool that is difficult to pass.

laxative

A drug that loosens stool or helps the bowels move, used to treat or prevent constipation.

docusate

A stool softener that lets water and fat mix into the stool so it is easier to pass.

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