VIP (Vasoactive Intestinal Peptide)

Vasoactive intestinal peptide (VIP) is a 28-amino acid peptide hormone and neurotransmitter found in the gut, pancreas, and brain that acts as a potent vasodilator, smooth muscle relaxant, and immune system regulator. It stimulates water and electrolyte secretion, lowers blood pressure, aids in digestion, and regulates immunity