Vasoactive intestinal peptide (VIP) is a small protein that plays a crucial role in the digestive system. It helps regulate various functions, such as stimulating the secretion of digestive juices and relaxing the muscles in the intestines. VIP is produced in several parts of the body, including the pancreas and brain, and it helps coordinate the activities of different organs during digestion. In addition to its role in digestion, VIP also has effects on the cardiovascular system. It can help widen blood vessels, which improves blood flow and lowers blood pressure. This makes VIP important for maintaining overall health and responding to stress in the body.