Synonyms : VIP (Vasoactive Intestinal Peptide), Vasoactive Intestinal Polypeptide, Vasointestinal Peptide, Intestinal Peptide, Vasoactive, Intestinal Polypeptide, Vasoactive, Peptide, Vasoactive Intestinal, Peptide, Vasointestinal, Polypeptide, Vasoactive Intestinal