senna

1. Any of various plants of the genus Cassia, having pinnately compound leaves and showy, nearly regular, usually yellow flowers.
2. The dried leaves of Cassia angustifolia or C. acutifolia, used medicinally as a laxative.

[New Latin, from Arabic sanā, akin to Aramaic sanyā, a thorn-bush.]

(click to enlarge)
Senna (Cassia didymobotrya). (credit: Gerald Cubitt)

Any of several plants, especially of the genus Cassia, in the pea family (see legume), mostly of subtropical and tropical regions. Many are used medicinally; some yield tanbark used in preparing leather. Some sennas are among the showiest flowering trees. In the eastern U.S., wild sennas (C. hebecarpa and C. marilandica) grow up to 4 ft (1.25 m) high and have showy spikes of yellow flowers. Some species are Old World shrubs or small trees.

For more information on senna, visit Britannica.com.

Brand names: Agoral®, Black-Draught®, Chocolated Laxative , Dr Caldwell® Laxative, Ex-Lax®, Fletchers® Castoria, Gentlax®, Innerclean®, Lax Pills™ (old formulation), Laxative, Little Tummys® Laxative Drops, Perdiem®, Senexon, Senna-Gen™, Senna-Lax®, Senna-Relief ® Childs , Sennatural™, Senokot®, Senokot® Childrens, SenokotXTRA®, Senolax®, Uni-Cenna®

Drug Forms:
• Senna tablets or granules (below)
• Senna oral syrup
• Senna suppositories
• Senna Concentrate Oral solution
• Senna Concentrate Oral syrup
• Senna Concentrate Oral tablet
• Sennosides Oral solution
• Sennosides Oral tablet

Español:
• Gránulos o tabletas de sen
• Jarabe oral de sen
• Supositorios de sen
• Sen Concentrado, Solución oral
• Sen Concentrado, Jarabe oral
• Sen Concentrado, Tableta oral
• Sen, Solución oral
• Sen, Tableta oral

Senna tablets or granules

What are senna tablets, granules, or powder?

SENNA (Senokot®) is a stimulant laxative that can relieve constipation; empty and prepare the bowel for surgery or examination. Senna tablets, granules and powder are available without a prescription.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions
• appendicitis
• diabetes
• severe constipation
• stomach pain or blockage
• vomiting
• an unusual or allergic reaction to senna, tartrazine dye, other medicines, foods, dyes, or preservatives
• pregnant or trying to get pregnant
• breast-feeding

How should I take this medicine?

Take senna tablets or granules by mouth. Follow the directions on the package for the preparation that you are taking. Always take with plenty of water (at least one full glass). Take exactly as directed. Do not take your medicine more often than directed.

Contact your pediatrician or health care professional regarding the use of this medicine in children. Special care may be needed.

What if I miss a dose?

What drug(s) may interact with senna?

There are none known. However senna may affect the time other medicines stay in the stomach. It is best not to take senna within 1 to 2 hours of taking other medicines.

What should I watch for while taking senna?

Do not use for more than one week without advice from your prescriber or health care professional. Senna can be habit-forming. Long-term use can make your body depend on the laxative for regular bowel movements. Long-term use can damage the bowel, cause malnutrition, and problems with the amounts of water and salts in your body. If your constipation keeps returning, check with your prescriber or health care professional.

Always take senna with plenty of water.

Do not inhale dust from the granules. This can make breathing difficult and cause an allergic reaction.

What side effects may I notice from taking senna?

The most serious side effect is overuse, which can cause dependence on the laxative.

Other side effects with senna include
• bloating
• diarrhea
• discolored urine (do not be alarmed this is not serious)
• lower stomach discomfort or cramps
• muscle weakness
• nausea, vomiting
• unusual tiredness
• unusual weight loss

Where can I keep my medicine?

Keep out of the reach of children in a container that small children cannot open.

Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Keep container tightly closed. Throw away any unused medicine after the expiration date.

Last updated: 7/1/2002

Important Disclaimer: The drug information provided here is for educational purposes only. It is intended to supplement, not substitute for, the diagnosis, treatment and advice of a medical professional. This drug information does not cover all possible uses, precautions, side effects and interactions. It should not be construed to indicate that this or any drug is safe for you. Consult your medical professional for guidance before using any prescription or over the counter drugs.

Description

Senna, Cassia angustifolia, is known by the name Egyptian senna. A member of the Leguminaceae family, senna is a shrub-like plant whose leaves and pods have been used for centuries in the East and West as a purgative. This property of senna was first described in the ninth century A.D. by Arabian physicians in the service of the caliph of Baghdad. Senna's reputation as a powerful laxative has grown through the ages. Senna can be found as an ingredient in many over-the-counter laxative products in the United States. Senna is also considered an important herb in traditional Chinese medicine, Indian Ayurvedic, and unani medicine. The two species used most often for medicinal purposes are Alexandrian senna and Tinnevelly senna. The Alexandrian variety is obtained mainly from Egypt and the Sudan. Tinnevelly senna is primarily cultivated in India.

Senna contains naturally occurring chemicals called anthraquinone glycosides. They are strong laxatives that soften stools and increase the contractions of intestinal muscle, thereby stimulating bowel movements. "Like aloe, buckthorn, and cascara sagrada, senna contains anthraquinone glycosides, chemicals that stimulate the colon," reports James A. Duke, Ph.D. Senna usually starts to work in three to nine hours. Anthraquinone laxatives, such as senna, are believed to alleviate constipation by increasing the amount of water and electrolytes in the intestine. They also work by stimulating contractions of the colon muscles, which help to accelerate the passage of stool. Senna is considered among the strongest of the anthraquinone laxatives. Its effectiveness as a purgative has been supported by centuries of anecdotal reports as well as modern human and animal studies.

General Use

Senna is widely accepted as a stool softener and a short-term treatment for constipation. Senna leaf is approved by the World Health Organization (WHO) for short-term use in occasional constipation. Senna is also approved in the United States and in European countries as an ingredient in over-the-counter and prescription laxative preparations. The herb is approved by the German government for any condition in which alleviating constipation or softening stools is desirable. Senna may be recommended for people with hemorrhoids, anal fissures, or those undergoing surgery involving the abdomen, anus, or rectum. Senna may also be used to clear the bowel in order to improve the visibility of abdominal organs during an ultrasound procedure.

Clinical studies in the United States and abroad involving various age groups suggest that senna is effective in managing constipation associated with a number of causes including surgery, childbirth, and use of narcotic pain relievers. A study in the medical journal Diseases of the Colon and Rectum showed that senna was able to prevent or treat postoperative constipation after proctologic surgery. The South African Medical Journal shows that treatment with senna was successful in 93%-96% of women suffering from postpartum constipation. By comparison, only 51%-59% of women in the placebo group experienced relief. Senna is considered to be one of the more effective agents for relieving constipation caused by such narcotic pain relievers as morphine. In another study published in the Journal of Pain and Symptom Management, researchers recommended the use of senna in terminal cancer patients with opiate-induced constipation, citing the effectiveness of the herb and its relatively low cost. A study published in the medical journal Pharmacology suggests that a combination of senna and bulk laxatives can alleviate chronic constipation in geriatric patients.

Preparations

The recommended dosage of senna, which is generally taken at bedtime, ranges from 0.6-2.0 g a day. Tablets, syrups, oral solutions, and other medications that list senna as an ingredient usually contain standardized amounts of the herb and its active agents. People who choose to prepare senna using unprocessed leaves or pods may have difficulty determining exact dosages. No matter which form or preparation of senna is chosen, using the lowest effective dosage helps to avoid side effects.

Consumers who wish to brew a medicinal tea from unprocessed senna should use 1-2 tsp of the dried leaves of the herb per cup of boiling water and let it steep for about 10 minutes. Senna is generally considered to have an unpleasant taste, so adding sugar or honey to the mixture may help to make it more palatable. Anise, ginger, chamomile, coriander, fennel, and peppermint can also be added to the tea to improve its taste and to reduce gas and cramping. Up to one cup of senna tea a day is recommended to alleviate constipation. It should not be taken for longer than one or two weeks.

Precautions

Senna and other stimulant laxatives should not be used for longer than two to four weeks without medical supervision. Using senna longer than recommended can result in lazy bowel syndrome and permanent damage to the intestinal lining. Chronic use or misuse can also cause electrolyte and fluid imbalances, which can have adverse effects on the heart. To prevent or treat constipation, most doctors recommend making dietary changes or trying milder bulk-forming laxatives such as psyllium before using senna or other anthraquinone purgatives. Dietary approaches involve eating a high-fiber diet, drinking six to eight glasses of water a day, and getting plenty of regular exercise.

Unless otherwise indicated by a doctor, senna should not be used by anyone with an intestinal obstruction, stomach inflammation, or intestinal inflammatory diseases such as Crohn's disease, colitis, irritable bowel syndrome, or appendicitis. Senna should also be avoided by those with undiagnosed abdominal pain. Senna should not be used by children younger than age 12. Senna should not be used by pregnant or breast-feeding women. It may significantly reduce drug absorption and lessen the efficiency of any over-the-counter or prescription medication. Children and seniors, who may be more susceptible to senna's effects, should start with smaller dosages of the herb.

Side Effects

Such stimulant laxatives as senna tend to have more side effects than other purgatives, so it is important to take the lowest effective dosage. The side effects of senna include stomach cramps, diarrhea, and gas, which can be severe if the herb is used longer than recommended or in large amounts. The effects of senna can be immediate, sometimes too fast or intense. These problems may be avoided by reducing the dosage and adding other herbs. More serious effects include fainting, dehydration, and such electrolyte disorders as low blood potassium, albuminuria, and hematuria. Potassium deficiency can lead to muscle weakness and disorders of heart function. Potassium levels may drop even further if senna is combined with cardiac glycoside medications, diuretics, or corticosteroids. People using diet pills or teas should be sure that if senna is an ingredient they use the products short-term (a month or less).

Interactions

Because of its potential effect on potassium levels, senna should not be combined with antiarrhythmic drugs, thiazide diuretics, corticoadrenal steroids, or licorice root without the supervision of a doctor.

Resources

Books

Duke, James A., Michael Castleman, and Alice Feinstein. The Green Pharmacy. Emmaus, PA: Rodale Press, 1997.

Foster, Steven and Varro E. Tyler. Tyler's Honest Herbal: A Sensible Guide to the Use of Herbs and Related Remedies. Binghamton, NY: Haworth, 1998.

Goldberg, Burton. Alternative Medicine: The Definitive Guide. Fife, WA: Future Medicine Publishing, 1993.

Periodicals

Agra, Y. Sacristan and M.A. Gonzalez. "Efficiency of Senna versus Lactulose in Terminal Cancer Patients Treated with Opioids." Journal of Pain and Symptom Management (1998) 15(1): 1-7.

Corman, M.L. "Management of Postoperative Constipation in Anorectal Surgery." Diseases of the Colon and Rectum (1979) 22(3): 149-51.

"Go for Natural Laxative Relief, but Best if not from Senna or Cascara." Environmental Nutrition (May 2002): 7.

Shelton, M.G. "Standardized Senna in the Management of Constipation in the Puerperium: A Clinical Trial." South African Medical Journal (1980) 57(3): 78-80.

Organizations

American Botanical Council. P.O. Box 144345, Austin, TX 78714-4345. (512) 926-4900. http://www.herbalgram.org.

Herb Research Foundation.1007 Pearl Street, Suite 200, Boulder, CO 80302. (303) 449-2265. Info@herbs.org. http://www.herbs.org.

Other

Prevention Magazine.http://www.prevention.com.

[Article by: Greg Annussek; Teresa G. Odle]

The dried leaflets of Cassia acutiflora; used in a syrup, fluid extract or compound powder as a cathartic.

• s. bean — see cassia occidentalis.
• coffee s. — see cassia occidentalis.

Look up Senna in Wiktionary, the free dictionary.

Senna may refer to:

Contents 1 Individuals 2 Plants 3 Other 4 See also

Individuals

• Ayrton Senna (1960–1994), former Brazilian F1 driver and triple World Champion
• Bruno Senna (born 1983), race car driver and nephew of Ayrton Senna
• Danzy Senna (born 1970), novelist
• Marcos Senna (born 1976), Brazilian-Spanish footballer
• Márcio Senna (born 1981), Brazilian footballer, Marcos brother
• Senna Guemmour, German singer and member of Monrose (2006–)
• Fictional characters:
  • Senna Refa, a character in the Babylon 5 novel Legions of Fire - Out of the Darkness. She is the daughter of Antono Refa
    • Senna is also the name of another, unrelated Centauri woman; the governess seen in Babylon 5: In the Beginning. She was an old retainer of 'House Jaddo'.
  • Senna Wales, a witch in the Everworld fantasy series for young adults by K. A. Applegate
  • Senna, a character also known as the Memory Rosary, whom appears exclusively in the movie Bleach: Memories of Nobody

Plants

• Senna (genus), a genus of legumes
• Formerly, plants in Cassia (genus) which used to include Senna
• Black senna, the Scrophulariaceae genus Seymeria
• Bladder sennas, the legume genus Colutea
• Scorpion sennas, plants in the legume genera Coronilla and Hippocrepis^{[verification needed]}

Other

• Senna Comasco, a comune (municipality) in the Province of Como in the Italian region Lombardy
• Senna Lodigiana, a comune (municipality) in the Province of Lodi in the Italian region Lombardy
• Sanandaj (or Sine), a Kurdish city in western Iran
• Senna (poetic), an exchange of insults found in the Poetic Edda

See also

• Sena
• Sienna

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