What it is
VIP is a naturally occurring peptide neurotransmitter and hormone studied across gastrointestinal, pulmonary, immune, and vascular biology.
Mechanism and research questions
- VIP signals through VPAC1 and VPAC2 receptors and can influence cAMP-linked pathways.
- Those receptor signals can alter secretion, smooth-muscle tone, vascular responses, and immune-cell behavior depending on the tissue and experimental conditions.
Human evidence
Human studies exist across specific diseases and physiologic contexts; evidence must be interpreted by indication and formulation.
Preclinical / mechanistic evidence
Mechanistic and animal research spans immune, pulmonary, neural, and gastrointestinal models.
Evidence summary
VIP has a large scientific literature, but a broad literature count is not evidence for a specific catalog use.
Limits and interpretation
- Very broad biology makes indication-specific sourcing essential.
- Do not infer therapeutic effect from receptor activity alone.
- No dosing or medical-use instructions are provided.
Regulatory and identity note
Research-use peptide; not presented as a general approved treatment.