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Compounds / VIP

VIP

Full name
Vasoactive Intestinal Peptide
Mechanism
28-amino-acid neuropeptide with vasodilatory, immunomodulatory, and anti-inflammatory actions via VPAC1/VPAC2 receptors; studied in chronic inflammatory response syndrome (CIRS) and pulmonary hypertension research.
Half-life
very short (~1-2 min systemic)
Administration
intranasal, subcutaneous (research), inhaled (research)
Typical dosage*
low: 50mcg intranasal · typical: intranasal 50mcg several x/day (Shoemaker-protocol-style) · high: protocol-defined
Researched for
CIRS/mould-illness protocols (anecdotal/some clinical use intranasal), pulmonary/anti-inflammatory research
Reported side effects
hypotension/flushing (vasodilatory), limited controlled human data
Interactions
caution with antihypertensives (additive hypotension)
Commonly combined
intranasal VIP standalone (CIRS protocols, anecdotal)
Scheduling
🇦🇺 AUNot ARTG-registered; compounded with prescription
🇺🇸 USNot FDA-approved; compounded
🇬🇧 UKNot licensed
Regulatory status
Not approved; compounded use in niche protocols. Controlled efficacy evidence is limited.

*Doses are commonly-reported figures from public sources, not a recommendation. Educational only.

18studies
9faqs
immuneanti-inflammatoryresearch

Studies (18)

YearTitle / venueSource
2025Nociceptor neurons suppress alveolar macrophage-induced Siglec-F(+) neutrophil-mediated inflammation to protect against pulmonary fibrosis
Immunity · preclinical
PMID 40449484
2025Proinflammatory cytokines and neuropeptides in psoriasis, depression, and anxiety
Acta physiologica (Oxford, England) · preclinical
PMID 39960105
2023The role of vasoactive intestinal peptide in pulmonary diseases
Life sciences · preclinical
PMID 37742737
2023Whole genome sequencing identifies genetic variants associated with neurogenic inflammation in rosacea
Nature communications · preclinical
PMID 37402769
2022Immunomodulatory effect of N-acetyl-seryl-aspartyl-proline and vasoactive intestinal peptide on chronic obstructive pulmonary disease pathophysiology
Fundamental & clinical pharmacology · preclinical
PMID 35763864
2021Neuroimmune Pathophysiology in Asthma
Frontiers in cell and developmental biology · preclinical
PMID 34055794
2018Skin neurogenic inflammation
Seminars in immunopathology · preclinical
PMID 29713744
2018Vasoactive intestinal peptide is upregulated in women with endometriosis and chronic pelvic pain
American journal of reproductive immunology (New York, N.Y. : 1989) · preclinical
PMID 29675846
2017Vasoactive intestinal peptide dampens formyl-peptide-induced ROS production and inflammation by targeting a MAPK-p47(phox) phosphorylation pathway in monocytes
Mucosal immunology · preclinical
PMID 27271317
2015Silencing Nociceptor Neurons Reduces Allergic Airway Inflammation
Neuron · preclinical
PMID 26119026
2015The neuropeptide vasoactive intestinal peptide: direct effects on immune cells and involvement in inflammatory and autoimmune diseases
Acta physiologica (Oxford, England) · preclinical
PMID 25422088
2013Type 2 innate lymphoid cells control eosinophil homeostasis
Nature · preclinical
PMID 24037376
2011Prospect of vasoactive intestinal peptide therapy for COPD/PAH and asthma: a review
Respiratory research · preclinical
PMID 21477377
2009Expression of vasoactive intestinal peptide and related receptors in overcirculation-induced pulmonary hypertension in piglets
Pediatric research · preclinical
PMID 19581838
2005Role of vasoactive intestinal peptide in inflammation and autoimmunity
Current opinion in investigational drugs (London, England : 2000) · preclinical
PMID 16312132
2004Role of vasoactive intestinal peptide and inflammatory mediators in enteric neuronal plasticity
Neurogastroenterology and motility · preclinical
PMID 15066017
2000Pathways of inflammation and cell death in the lung: modulation by vasoactive intestinal peptide
Regulatory peptides · preclinical
PMID 11033049
1991Neuropeptides and asthma
The American review of respiratory disease · preclinical
PMID 1706152

Questions (9)

What is VIP?

VIP (Vasoactive Intestinal Peptide). 28-amino-acid neuropeptide with vasodilatory, immunomodulatory, and anti-inflammatory actions via VPAC1/VPAC2 receptors; studied in chronic inflammatory response syndrome (CIRS) and pulmonary hypertension research.

What is VIP used for?

Commonly discussed uses: CIRS/mould-illness protocols (anecdotal/some clinical use intranasal), pulmonary/anti-inflammatory research. There is both human and animal/preclinical research, though the depth and quality vary by indication. Note: most uses are not approved indications.

How does VIP work?

Mechanism: 28-amino-acid neuropeptide with vasodilatory, immunomodulatory, and anti-inflammatory actions via VPAC1/VPAC2 receptors; studied in chronic inflammatory response syndrome (CIRS) and pulmonary hypertension research.

Is VIP safe?

Reported considerations: hypotension/flushing (vasodilatory), limited controlled human data. There is both human and animal/preclinical research, though the depth and quality vary by indication. Not approved; compounded use in niche protocols. Controlled efficacy evidence is limited. This is not a safety endorsement; safety data for unapproved compounds is incomplete.

What is the typical dose of VIP?

Commonly cited ranges (educational reference, not a recommendation): low 50mcg intranasal, typical intranasal 50mcg several x/day (Shoemaker-protocol-style), high protocol-defined. Administration: intranasal, subcutaneous (research), inhaled (research). Half-life: very short (~1-2 min systemic).

Is VIP legal in Australia?

Australian status: Not ARTG-registered; compounded with prescription. Not approved; compounded use in niche protocols. Controlled efficacy evidence is limited. General regulatory context: most active peptides are Schedule 4 and require a prescription; import via the Personal Importation Scheme requires a valid Australian prescription for prescription-only goods.

How do you store VIP?

Reconstitution/storage reference: compounded intranasal formulation varies; storage: refrigerated.

What is VIP commonly stacked with?

Commonly discussed combinations (anecdotal for unapproved compounds): intranasal VIP standalone (CIRS protocols, anecdotal). Stacking increases interaction/safety uncertainty.