Drago, F., Macauda, S., & Salehi, S. 2002 Small doses of melatonin increase intestinal motility in rats.. Digestive Diseases and Sciences 47(9): 1969-1974.

Notes: Since melatonin receptors are present in the intestines, the possibility that this hormone may affect intestinal motility has been studied in the rat using a carmine cochineal powder meal.