Understand the source comparison
VIP vs Vasoactive Intestinal Peptide — Same Molecule
VIP and vasoactive intestinal peptide aren't two different things. They're the exact same molecule. VIP is just the acronym researchers use because typing 'vasoactive intestinal peptide' every time would take forever. The confusion comes from seeing both names
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- VIP and vasoactive intestinal peptide aren't two different things. They're the exact same molecule. VIP is just the acronym researchers use because typing 'vasoactive intestinal peptide' every time would take forever. The confusion comes from seeing both names in literature, supplement labels, and research peptide catalogs without realizing they're identical. The peptide was first isolated from porcine duodenum in 1970 by Said and Mutt at the Karolinska Institute. The name 'vasoactive intestinal peptide' reflects its original discovery site and its ability to dilate blood vessels, but the molecule functions far beyond the gut.
- Our team works with researchers who order VIP for studies ranging from neuroinflammation to circadian rhythm modulation. The question comes up constantly. 'Is VIP different from vasoactive intestinal peptide?'. And the answer is always no.
- What's the difference between VIP and vasoactive intestinal peptide?
- There is no difference. VIP is the acronym for vasoactive intestinal peptide. Both refer to the same 28-amino-acid neuropeptide that acts as a neurotransmitter, hormone, and immune modulator throughout the body. The molecule was named for its discovery site in the intestine and its vasodilatory effects, but it functions in the brain, lungs, and immune system as well. The acronym VIP is used universally in research literature because it's faster to write.