Vasoactive intestinal peptide also known as the vasoactive intestinal polypeptide or VIP is a peptide hormone containing 28 amino acid residues. VIP is a neuropeptide that belongs to a glucagon/secretin superfamily, the ligand of class II G protein-coupled receptors. VIP is produced in many tissues of vertebrates including the gut, pancreas, and suprachiasmatic nuclei of the hypothalamus in the brain.VIP stimulates contractility in the heart, causes vasodilation, increases glycogenolysis, lowers arterial blood pressure and relaxes the smooth muscle of trachea, stomach and gall bladder. In humans, the vasoactive intestinal peptide is encoded by the VIP gene.

The antibody is stable for at least 1 year from the date of receipt when stored at -20^°C to -70^°C. Reconstituted antibody can also be aliquotted and stored at 4^°C for 1 month or at -20^°C to -70^°C in a manual defrost freezer for many months without detectable loss activity. Please avoid freeze-thaw cycles.