Cisapride is primarily used to treat gastrointestinal motility disorders, such as gastroparesis, chronic constipation, and gastroesophageal reflux disease (GERD). It works by stimulating the muscles in the digestive tract, enhancing the movement of food through the stomach and intestines. This helps alleviate symptoms like bloating, heartburn, and delayed gastric emptying. It is particularly beneficial for patients who do not respond well to other treatments. However, due to potential serious side effects, including cardiac arrhythmias, its use is often restricted and closely monitored by healthcare professionals. It is typically prescribed when other therapies have failed and only for short-term treatment.