Motilin (porcine) is primarily used in research to study gastrointestinal motility. It plays a significant role in regulating the migrating motor complex (MMC) in the gut, which is crucial for controlling the movement of food through the digestive tract. Researchers utilize this peptide to investigate disorders related to motility, such as gastroparesis or irritable bowel syndrome (IBS). Additionally, it serves as a tool in pharmacological studies to develop drugs that mimic or inhibit its action, potentially offering treatments for digestive system dysfunctions. Its application is also seen in understanding the physiological mechanisms of hunger and satiety, as motilin levels fluctuate in response to fasting and feeding.