All peptides
Anti-InflammatoryModerate evidence#2 in Anti-InflamSubcutaneous · Into fat, under the skin

VIP (Vasoactive Intestinal Peptide)

Also known as Vasoactive Intestinal Peptide

Vasoactive Intestinal Peptide (VIP) is a naturally occurring 28-amino-acid neuropeptide distributed widely across the gut, nervous system, and immune tissue, where it functions as a vasodilator and immune-signaling molecule. It has drawn research interest in the context of chronic inflammatory response syndrome (CIRS) and mold-related illness, autoimmune conditions, and pulmonary disease. Much of the human clinical data come from small studies and case series rather than large controlled trials. VIP is not an approved standalone therapy for these uses and remains investigational outside of narrow clinical contexts.

Reported benefits

  • Studied in chronic inflammatory response syndrome and mold-illness protocols
  • Explored for anti-inflammatory immune modulation
  • Investigated for potential support of pulmonary and vascular function
  • May support normalization of certain neuroendocrine markers in small studies

How it works

VIP binds VPAC1 and VPAC2 receptors expressed on immune cells, smooth muscle, and neurons, activating cyclic AMP signaling that promotes vasodilation and modulates cytokine release. It is associated with a shift toward anti-inflammatory Th2-type immune signaling and has been studied for its role in regulating pituitary hormone secretion, which underlies its use in some CIRS-related protocols. Its broad receptor distribution means effects can extend to respiratory, gastrointestinal, and neuroendocrine systems.

Dosing ranges

TierDoseFrequency
Low25 mcgup to 4 times daily
Moderate50 mcgup to 4 times daily
High100 mcgup to 4 times daily

Estimate your dose

Dose estimator

Educational estimate for VIP (Vasoactive Intestinal Peptide), scaled to body size. Not medical advice.

Read before using

This tool produces a rough, educational estimate by scaling commonly-published research ranges to lean body mass. It is not a prescription, medical advice, or a substitute for a licensed clinician. Most peptides use fixed dosing, not weight-based dosing. Individual needs vary. You are solely responsible for how you use this information.

Mixing & syringe units

Target dose follows the estimate above. Change it there, or edit it directly below.

Reconstitution calculator

How much water to add and how many insulin-syringe units to draw for VIP (Vasoactive Intestinal Peptide). Educational only.

mL

Draw to this mark

1units

= 0.01 mL for a 50 mcg dose

0100 u (1 mL)

Concentration

5,000 mcg/mL

Doses per vial

200

Under 2 units is hard to measure accurately. Use less water for a larger, easier-to-read draw.

A U-100 syringe reads 100 units per mL. This is a reconstitution math helper only, not a prescription or dosing advice. Verify every calculation and consult a qualified healthcare provider.

Possible side effects

Flushing or facial warmthTransient low blood pressureFatigueInjection site irritationLimited large-scale human safety data

Stacking notes

Used within structured multi-step CIRS protocols that address environmental exposure first; not typically combined ad hoc with unrelated peptides

Common protocols

Multiple small doses per day as part of supervised CIRS treatment protocols

Common questions

What is VIP (Vasoactive Intestinal Peptide) used for?

Vasoactive Intestinal Peptide (VIP) is a naturally occurring 28-amino-acid neuropeptide distributed widely across the gut, nervous system, and immune tissue, where it functions as a vasodilator and immune-signaling molecule. It has drawn research interest in the context of chronic inflammatory response syndrome (CIRS) and mold-related illness, autoimmune conditions, and pulmonary disease. Much of the human clinical data come from small studies and case series rather than large controlled trials. VIP is not an approved standalone therapy for these uses and remains investigational outside of narrow clinical contexts. Reported benefits include studied in chronic inflammatory response syndrome and mold-illness protocols, explored for anti-inflammatory immune modulation, investigated for potential support of pulmonary and vascular function.

What is a typical VIP (Vasoactive Intestinal Peptide) dose?

Reported ranges run 25-100 mcg. A low protocol is 25 mcg up to 4 times daily, and a high protocol is 100 mcg up to 4 times daily. This is reference information, not a dosing recommendation.

What is the half life of VIP (Vasoactive Intestinal Peptide)?

Very short, on the order of 1-2 minutes in circulation. That is what sets the dosing frequency, and it is why the timing guidance is as directed by your clinician.

How is VIP (Vasoactive Intestinal Peptide) administered?

Subcutaneous: into fat, under the skin. Clinical research has also explored nasal (intranasal) administration; injectable subcutaneous use is more common in current research protocols.

How long is a VIP (Vasoactive Intestinal Peptide) cycle?

variable, often several months in supervised protocols on, followed by reassessed based on clinical markers off. Used in some structured protocols only after underlying triggers such as environmental mold exposure are addressed; cycling is protocol-specific and supervised

What are the side effects of VIP (Vasoactive Intestinal Peptide)?

Reported side effects include flushing or facial warmth, transient low blood pressure, fatigue, injection site irritation, limited large-scale human safety data. Evidence level for this compound is moderate evidence.

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Educational use only, not medical advice. This profile is provided for research and educational purposes. VIP (Vasoactive Intestinal Peptide) may be a research compound or a prescription medication; nothing here is intended to diagnose, treat, cure, or prevent any disease. Dosing figures reflect commonly-published research ranges, not a prescription. Consult a qualified healthcare provider before making any health decision. Read the full disclaimer →

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Educational use only. The information and calculators on this site are provided for research and educational purposes and are not medical advice, a diagnosis, a prescription, or a substitute for a licensed healthcare provider. Many compounds described are research compounds or prescription medicines not approved for general use. You must be 21 or older. Always consult a qualified clinician before making any health decision. Read the full disclaimer · Privacy Policy

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