July 24, 2016

Senna

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What other names is Senna known by?

Alexandrian Senna, Alexandrinische Senna, Casse, Cassia acutifolia, Cassia angustifolia, Cassia lanceolata, Cassia senna, Fan Xie Ye, Indian Senna, Khartoum Senna, Sen, Sena Alejandrina, Séné, Séné d'Alexandrie, Séné d'Egypte, Séne d'Inde, Séné de Tinnevelly, Senna alexandrina, Sennae Folium, Sennae Fructus, Sennosides, Tinnevelly Senna, True Senna.

What is Senna?

Senna is an herb. The leaves and the fruit of the plant are used to make medicine.

Senna is an FDA-approved nonprescription laxative. It is used to treat constipation and also to clear the bowel before diagnostic tests such as colonoscopy.

Senna is also used for irritable bowel syndrome (IBS), hemorrhoids, and weight loss.

Senna fruit seems to be gentler than senna leaf. This has led the American Herbal Products Association (AHPA) to warn against long-term use of senna leaf, but not senna fruit. The AHPA recommends that senna leaf products be labeled, "Do not use this product if you have abdominal pain or diarrhea. Consult a healthcare provider prior to use if you are pregnant or nursing. Discontinue use in the event of diarrhea or watery stools. Do not exceed recommended dose. Not for long-term use."

Is Senna effective?

Senna is effective as a laxative for constipation.

There isn't enough information to know if senna is effective for the other conditions people use it for, including: hemorrhoids, losing weight, and others.

Likely Effective for...

  • Constipation. Taking senna by mouth is effective for short-term treatment of constipation. Senna is an FDA-approved nonprescription drug for adults and children ages 2 years and older. However, in children ages 3-15 years, mineral oil and a medication called lactulose might be more effective than taking senna. Senna also appears to be effective for treating constipation when used in combination with psyllium or docusate sodium. In elderly people, senna plus psyllium is more effective than lactulose for treating ongoing constipation. Senna plus docusate sodium is effective for treating constipation in the elderly and in people who have undergone anorectal surgery. Taking senna appears to be as effective as lactulose, psyllium, and docusate for relieving constipation in people taking opioids or loperamide.

Possibly Effective for...

  • Bowel preparation before colonoscopy. Taking senna by mouth is as effective as castor oil and bisocodyl for bowel cleansing. Some evidence suggests that senna is also at least as effective as polyethylene glycol for bowel preparation. However, conflicting evidence exists. It is unclear if taking senna with polyethylene glycol is more effective than taking polyethylene glycol alone. Senna appears to be less effective than sodium phosphate for bowel cleansing. However, taking a combination of senna, sodium picosulfate, and polyethylene glycol appears to be more effective than sodium phosphate for bowel prepration prior to colonoscopy.

Possibly Ineffective for...

  • Diagnostic imaging. Taking senna by mouth does not appear to improve imaging of abdominal organs.

Insufficient Evidence to Rate Effectiveness for...

  • Hemorrhoids.
  • Irritable bowel disease.
  • Losing weight.
  • Other conditions.
More evidence is needed to rate the effectiveness of senna for these uses.

Natural Medicines Comprehensive Database rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, and Insufficient Evidence to Rate (detailed description of each of the ratings).


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