Experimental evidence for vasoactive intestinal peptide as the cause of the watery diarrhea syndrome
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Updated: May 3, 2026

Investigating Intestinal Inflammation in DSS-induced Model of IBD
Published on: February 1, 2012
Abstract:
We have infused pure porcine vasoactive intestinal peptide (VIP) into 8 healthy ambulant unsedated pigs. At plasma VIP levels closely comparable to those found in the human Verner-Morrison syndrome, gross watery diarrhea and hypokalemia were produced. When the VIP infusion was discontinued the water diarrhea ceased abruptly. This study therefore provides some evidence to implicate VIP as a possible causal agent in the pathogenesis of the human watery diarrhea syndrome.
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