Vasoactive Intestinal Peptide (VIP)
Also known as: VIP
Vasoactive Intestinal Peptide (VIP) is a 28-amino acid neuropeptide of the secretin/glucagon family, widely distributed in the CNS and peripheral nervous system. It is a potent vasodilator, bronchodilator, and immunomodulator. Synthetic VIP (aviptadil) has been investigated in clinical trials for COVID-19-associated acute respiratory failure; it is NOT FDA-approved. Intranasal compounded VIP is used off-label in the controversial 'CIRS' (Chronic Inflammatory Response Syndrome) / mold-illness protocol popularized by Ritchie Shoemaker — CIRS is not a mainstream medical diagnosis.
Pricing for Vasoactive Intestinal Peptide (VIP)
Live vendor pricing, normalized to $/mg so sizes compare fairly — fused with each seller's Merit trust score and latest independent COA purity. Prices refresh daily.
COAs for Vasoactive Intestinal Peptide (VIP)
19 third-party tests across 9 vendors. Each card links to the full report.
For
Vasoactive Intestinal Peptide (VIP)
by Crush Research· batch CRVIP-10-2604-1
For
Vasoactive Intestinal Peptide (VIP)
by Simple Peptide· batch VP5-032026-1
For
Vasoactive Intestinal Peptide (VIP)
by BioLongevity Labs· batch 31-3-46041
For
Vasoactive Intestinal Peptide (VIP)
by Mile High Compounds· batch VIP-010-MH-01
For
Vasoactive Intestinal Peptide (VIP)
by Glacier Aminos· batch VIP10GA01
For
Vasoactive Intestinal Peptide (VIP)
by BioLongevity Labs· batch 31-3-45951
For
Vasoactive Intestinal Peptide (VIP)
by BioLongevity Labs· batch cmojb76ku0193kirx6m3i9gri
For
Vasoactive Intestinal Peptide (VIP)
by Skye Peptides· batch VIP25-05-002
For
Vasoactive Intestinal Peptide (VIP)
by Peptide Partners· batch VP20250511
For
Vasoactive Intestinal Peptide (VIP)
by Profound Aminos· batch 2025-05-19
For
Vasoactive Intestinal Peptide (VIP)
by Verified Peptides· batch cmojb6azj012wkirxcsj3o26v
For
Vasoactive Intestinal Peptide (VIP)
by Glacier Aminos· batch VIP10GA-02
Purity not on file
For
Vasoactive Intestinal Peptide (VIP)
by Mile High Compounds· batch VIP-010-MH-01
Purity not on file
For
Vasoactive Intestinal Peptide (VIP)
by Mile High Compounds· batch VIP-010-MH-01
Purity not on file
For
Vasoactive Intestinal Peptide (VIP)
by BioLongevity Labs· batch 31-3-45951
Purity not on file
For
Vasoactive Intestinal Peptide (VIP)
by BioLongevity Labs· batch cmojb76h30192kirxwdp6g317
Purity not on file
For
Vasoactive Intestinal Peptide (VIP)
by Skye Peptides· batch VIP25-05-002
Purity not on file
For
Vasoactive Intestinal Peptide (VIP)
by Skye Peptides· batch VIP25-05-002
Purity not on file
For
Vasoactive Intestinal Peptide (VIP)
by Peptide Partners· batch cmojb223b003fkirx4s4gkb1s
28 citations indexed for Vasoactive Intestinal Peptide (VIP)
review · 2026
A Historical Review of Vasoactive Intestinal Peptide and Pituitary Adenylate Cyclase-Activating Polypeptide in Sepsis
The neuropeptides vasoactive intestinal peptide (VIP) and pituitary adenylate cyclase-activating polypeptide (PACAP) have emerged as potent modulators of immune responses during sepsis, yet their roles remain complex, alternating between protective and permissive depending on timing, tissue compartment, and inflammator…
Study · 2026
Optogenetic circuit mapping reveals connectivity and synaptic physiology of T-stellate projections from the cochlear nucleus to the auditory midbrain
T-stellate neurons in the ventral cochlear nucleus (VCN) receive synaptic input from the cochlear nerve and encode information about sound frequency and intensity, including rapid fluctuations in sound intensity that are important for speech processing.
animal · 2026
An inhibitory circuit motif governs oscillation-dependent coupling between aperiodic activity and neural spiking
Behavior arises from coordinated neural population activity, yet how spiking and synaptic interactions give rise to extracellular population signals, including local field potentials (LFPs), remains unresolved.
Study · 2026
Opposing behavioral roles for a single gene in a species with a supergene polymorphism
Behavioral trade-offs, such as between territorial aggression and parental care, require coordination among neural and genetic mechanisms that influence opposing phenotypes.
Study · 2026
Cell Type-Specific Microcircuit Dynamics During Fear Conditioning in the Prefrontal Cortex
Abstract Fear, essential for survival, is regulated by complex neural circuits, with the medial prefrontal cortex (mPFC) serving as a key controller.
animal · 2026
The VIP-VIPR2 axis strengthens intestinal barrier integrity and antimicrobial immunity in Ctenopharyngodon idella
Bacterial pathogens like Aeromonas hydrophila threaten aquaculture by compromising fish immune defenses. The intestinal barrier is a critical frontline defense against pathogenic bacteria in fish, yet its regulation by neuroimmune mechanisms remains poorly understood.