Also known as: Vasoactive Intestinal Peptide, Vasoactive Intestinal Polypeptide
VIP is a neuropeptide research compound (not FDA-approved for human use) studied for systemic anti-inflammation. VIP is a naturally occurring neuropeptide that powerfully suppresses systemic inflammation, dilates blood vessels, and is the cornerstone treatment in the Shoemaker protocol for mold/biotoxin illness (CIRS). Research dose: 50–50 mcg 4x daily. Half-life: 2 minutes. Available from COA-verified vendors with code PEPTIDEX for up to 20% off.
Rankings independent · Research use only
28-amino acid neuropeptide that binds VPAC1 and VPAC2 receptors, activating cAMP pathways to produce broad anti-inflammatory effects. Inhibits TNF-alpha, IL-6, and IL-12 production while promoting Th2
⚠️ Educational only · Not medical advice · Consult a doctor · Most peptides are research-only / not FDA-approved for human use
COA-verified vendors · Use code PEPTIDEX for up to 20% off
| Vendor | Purity | List Price | With PEPTIDEX | Code | Shop |
|---|---|---|---|---|---|
Bio Longevity LabsTriple-Tested | 99%+ | $74.97/5mg | $63.72Save 15% | PEPTIDEX | Shop |
Use code PEPTIDEX for 15% off at Bio Longevity Labs.
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VIP (also known as Vasoactive Intestinal Peptide, Vasoactive Intestinal Polypeptide) is a prominently researched experimental compound classified strictly within the Neuropeptide framework. Operating primarily through advanced pharmacological pathways, its core mechanism of action is as follows: it 28-amino acid neuropeptide that binds VPAC1 and VPAC2 receptors, activating cAMP pathways to produce broad anti-inflammatory effects. Inhibits TNF-alpha, IL-6, and IL-12 production while promoting Th2/Treg tolerance. Potent pulmonary vasodilator and bronchodilator. Used in the Shoemaker CIRS protocol for Chronic Inflammatory Response Syndrome (biotoxin illness) to correct TGF-beta 1 dysregulation and restore immune homeostasis. with a documented biological half-life of roughly 0.033 hours, In preclinical investigative trials and independent academic studies, researchers utilizing VIP have documented significant, quantifiable biological outcomes, primarily focusing on systemic anti-inflammation, cirs/mold illness treatment, pulmonary vasodilation, immune modulation. Typical research protocols investigate administering 50 to 50mcg via nasal pathways 4x daily. However, it is critically important to understand that while VIP demonstrates profound physiological potential in highly controlled laboratory settings, it remains classified strictly as a research chemical and has not been approved by the United States Food and Drug Administration (FDA) for human therapeutic, diagnostic, or dietary consumption. Independent chemical analysis via rigorous third-party Certificate of Analysis (COA) testing utilizing High-Performance Liquid Chromatography (HPLC) and Mass Spectrometry (MS) remains the industry gold standard for verifying its base elemental stability when reconstituted appropriately in sterile bacteriostatic water.
28-amino acid neuropeptide that binds VPAC1 and VPAC2 receptors, activating cAMP pathways to produce broad anti-inflammatory effects. Inhibits TNF-alpha, IL-6, and IL-12 production while promoting Th2/Treg tolerance. Potent pulmonary vasodilator and bronchodilator. Used in the Shoemaker CIRS protocol for Chronic Inflammatory Response Syndrome (biotoxin illness) to correct TGF-beta 1 dysregulation and restore immune homeostasis.
Shoemaker et al.: Documents the use of intranasal VIP in CIRS patients, demonstrating normalization of TGF-beta 1, MMP-9, and VEGF, and improvement in pulmonary arterial pressure and NeuroQuant brain imaging abnormalities.
EmergingDelgado et al.: VIP potently inhibits TLR4-mediated NF-kB activation and subsequent cytokine production (TNF-alpha, IL-6, IL-12) in macrophages, establishing its role as an endogenous immunomodulator.
PreclinicalNot FDA-approved for general use. Used in the Shoemaker CIRS protocol under practitioner supervision. Very short plasma half-life (~2 min). Should only be used after completing prior CIRS treatment steps. May cause facial flushing and hypotension at higher doses.
See our evidence grading methodology for how we evaluate and grade peptide safety data.
⚠️ For educational purposes only. Not medical advice. Consult a healthcare professional before using any peptide.
Shoemaker CIRS protocol: 50mcg intranasal 4x daily. Must complete prior protocol steps (cholestyramine, VCS correction, etc.) before initiating VIP.
Week 1
Flushing adaptation; early TGF-beta 1 reduction
Weeks 2–4
Pulmonary arterial pressure improvement; reduced fatigue
Month 2–3
Normalization of inflammatory markers; cognitive improvement in CIRS
| Side Effect | Incidence | Severity |
|---|---|---|
Facial flushing | ~25% | mild |
Hypotension | ~10% | mild |
Nasal irritation | ~8% | mild |
Finding verified, high-purity VIP requires rigorous COA verification. We independently evaluate vendors based on third-party HPLC testing, purity thresholds (≥98%), and batch-specific documentation.
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⚠️ Educational only · Not medical advice · For research use only. Information on this page is compiled from peer-reviewed literature and is intended strictly for educational and informational purposes. Peptides discussed may be unapproved research chemicals — consult a licensed healthcare professional before considering any peptide compound. Read our full disclaimer
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