FDA Issues Warning About IBS Drug Zelnorm

The FDA today issued a warning associated with the irritable bowel syndrome (IBS) drug Zelnorm. The FDA says Zelnorm has been associated with serious cases of diarrhea as well as instances of ischemic colitis -- a medical condition where blood flow is reduced to the intestines. Zelnorm is a prescription medication for the short-term treatment of women with IBS whose primary bowel symptom is constipation. The FDA says it's adding this new drug information to ensure doctors and patients have the most current and complete information available when prescribing and taking Zelnorm.