Tegaserod is used to relieve pain, bloating, and constipation caused by irritable bowel syndrome (ibs; a condition that causes stomach pain, bloating, constipation, and diarrhea) in women whose main symptom is constipation. This medication is also used to increase the frequency of bowel movements and relieve bloating, straining, and stomach pain in women and men with chronic idiopathic constipation (constipation that is not due to other diseases or medications and that has been a problem for longer than 6 months). Tegaserod is in a class of medications called serotonin agonists. It works by improving muscle movement and increasing production of fluid in the bowels. tegaserod comes as a tablet to take by mouth. It is usually taken twice a day on an empty stomach shortly before a meal. Take tegaserod at around the same times every day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take tegaserod exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.If you have ibs with constipation, your doctor will probably tell you to take tegaserod for 4-6 weeks.