VIP (Vasoactive Intestinal Peptide)

Immune & Inflammation
Phase 3

VIP (Vasoactive Intestinal Peptide) is a 28-amino-acid brain and gut signaling peptide with wide-ranging effects on the immune and nervous systems. Research explores its anti-inflammatory properties and potential in autoimmune and neurodegenerative conditions.

Last updated March 6, 2026
111 PubMed-Verified Studies
Popular
Research-Driven Dosage Reports
RouteSubcutaneous (SC) · Intranasal
Dose50–200 mcg
Frequency2–3× daily (intranasal)
Duration4–12 weeks

Based on published research literature.

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Overview of VIP (Vasoactive Intestinal Peptide)

Activates VPAC receptors to reduce inflammation, promote regulatory T cells, and provide neuroprotection through multiple neuroendocrine pathways.

Inflammation / immune

Activates VPAC1 and VPAC2 G-protein coupled receptors, increasing intracellular cAMP levels.

Inhibits production of pro-inflammatory cytokines (TNF-α, IL-6, IL-12) while promoting anti-inflammatory mediators (IL-10), shifting immune balance.

Promotes differentiation and function of regulatory T cells (Tregs) (proposed), potentially useful in autoimmune conditions.

May suppress NF-κB activation (proposed), reducing inflammatory signaling.

Neuro / neuroprotection

Demonstrates neuroprotective properties in preclinical models, protecting neurons from toxic insults and oxidative stress.

Plays a role in circadian rhythm regulation through effects on suprachiasmatic nucleus, influencing sleep-wake cycles.

GI / mucosal

Regulates gut motility, secretion, and blood flow, influencing intestinal barrier function and mucosal immunity

Read Full VIP (Vasoactive Intestinal Peptide) Dosage Guide

Research-backed dosing protocols, timing, and administration details

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Immune & Inflammation