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Are there any side effects to Lotronex?


Lotronex® (alosetron) is a prescription medication for Irritable Bowel Syndrome (IBS) in women. It can help women who have diarrhea as the main symptom. Women who have constipation as their main symptom should not use Lotronex®.Lotronex® doesn't help men with IBS. Lotronex® can only be prescribed by doctors that have enrolled in a special program required by the manufacturer.

Common Lotronex® side effects

The most common side effect of Lotronex® is constipation. Twenty-five to thirty percent of women experience mild to moderate constipation that goes away soon after stopping treatment. Other common side effects of Lotronex® include nausea and stomach upset or pain. Infrequently, it can cause severe constipation causing worsening abdominal pain. Call your doctor if you begin to experience these symptoms. In rare cases, Lotronex® can cause a serious condition called ischemic colitis. If you notice lower stomach pain, bloody diarrhea or blood with bowel movements, stop taking Lotronex® and call your doctor right away.

Read more on Irritable Bowel Syndrome in our Health Encyclopedia.

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