What side effects can this medication cause?

Alosetron may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:

• upset stomach
• hemorrhoids

Some side effects can be serious. If you experience any of the symptoms listed in the IMPORTANT WARNING section, call your doctor immediately.

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/MedWatch/report.htm or by phone 1-800-332-1088.