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Alosetron is used to treat severe irritable bowel syndrome (IBS) in some women who have failed to respond to other treatments for severe diarrhea.
Studies have shown that alosetron improves abdominal (belly) discomfort and reduces diarrhea and urgency of bowel movements.1
All medicines have side effects. But many people don't feel the side effects, or they are able to deal with them. Ask your pharmacist about the side effects of each medicine you take. Side effects are also listed in the information that comes with your medicine.
Here are some important things to think about:
Call 911 or other emergency services right away if you have:
Call your doctor right away if you have:
Common side effects of this medicine include:
See Drug Reference for a full list of side effects. (Drug Reference is not available in all systems.)
Alosetron can cause a very serious side effect called ischemic colitis. This happens when blood flow to the large intestine is reduced. Symptoms of ischemic colitis include severe constipation, abdominal pain, rectal bleeding, and bloody diarrhea. If you have any of these symptoms, stop taking the medicine and call your doctor right away.
If you have ischemic colitis, you may need surgery to fix it. Some people who got ischemic colitis while taking alosetron died. Because of this dangerous side effect, alosetron is only used in women who have severe IBS with diarrhea and who have not had success with any other treatment for IBS. People taking alosetron must sign a consent form before starting to take the medicine, and only certain doctors can prescribe this medicine.
Medicine is one of the many tools your doctor has to treat a health problem. Taking medicine as your doctor suggests will improve your health and may prevent future problems. If you don't take your medicines properly, you may be putting your health (and perhaps your life) at risk.
There are many reasons why people have trouble taking their medicine. But in most cases, there is something you can do. For suggestions on how to work around common problems, see the topic Taking Medicines as Prescribed.
If you are pregnant, breast-feeding, or trying to get pregnant, do not use any medicines unless your doctor tells you to. Some medicines can harm your baby. This includes prescription and over-the-counter medicines, vitamins, herbs, and supplements. And make sure that all your doctors know that you are pregnant, breast-feeding, or planning to get pregnant.
Follow-up care is a key part of your treatment and safety. Be sure to make and go to all appointments, and call your doctor if you are having problems. It's also a good idea to know your test results and keep a list of the medicines you take.
Last Revised: April 26, 2012
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