Senna is used on a short-term basis to treat constipation. It also is used to empty the bowels before surgery and certain medical procedures. Senna is in a class of medications called stimulant laxatives. It works by increasing activity of the intestines to cause a bowel movement.
Senna comes as a liquid, powder, granules, and tablets to take by mouth. It is usually taken the evening before a bowel movement is desired. Senna normally causes a bowel movement within 6 to 12 hours. Do not take senna for more than 1 week without talking to your doctor. Follow the directions on your package or prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take senna exactly as directed. Frequent or continued use of senna may make you dependent on laxatives and cause your bowels to lose their normal activity. If you do not have a regular bowel movement after taking senna, do not take any more medication and talk to your doctor.
If you are taking the senna tablets, swallow the tablets whole with a glass of water; do not split, chew, or crush them.
This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.
talk to your doctor about the risks and benefits of taking senna if you are 65 years of age or older. Older adults should not usually take senna products over a long period of time because they are not as safe as other medications that can be used to treat the same condition.
A regular diet and exercise program is important for regular bowel function. Eat a high-fiber diet and drink plenty of liquids (eight glasses) each day as recommended by your doctor.
This medication usually is taken as needed. If your doctor has told you to take senna regularly, take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.
brown discoloration of urine
Senna may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.
If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online [at http://www.fda.gov/Safety/MedWatch] or by phone [1-800-332-1088].
Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom). Throw away any medication that is outdated or no longer needed. Talk to your pharmacist about the proper disposal of your medication.
In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.
Ask your pharmacist any questions you have about senna.
It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.
Last Revised - 11/15/2011
AHFS® Consumer Medication Information. © Copyright, 2014. The American Society of Health-System Pharmacists, Inc., 7272 Wisconsin Avenue, Bethesda, Maryland. All Rights Reserved. Duplication for commercial use must be authorized by ASHP.