Peptides Codex
Home
Neuropeptide

CGRP

CGRP (calcitonin gene-related peptide) is a 37-amino-acid neuropeptide produced by alternative splicing of the calcitonin gene. It is a potent vasodilator and a major focus of migraine and pain-signaling research.

By The Peptides Codex Editorial TeamReviewed July 10, 2026
Length
37 aa
Class
Neuropeptide
Function
Potent vasodilation and nociceptive signaling
Context
Migraine and pain neuroscience research

One of the most potent known vasodilators; central to migraine research.

Also known as: Calcitonin gene-related peptide

Part of the Neuropeptides & signaling cluster

Overview

CGRP (calcitonin gene-related peptide) is a 37-amino-acid neuropeptide produced by alternative splicing of the calcitonin gene. It is a potent vasodilator and a major focus of migraine and pain-signaling research.

Source & context

Biological / chemical source: Alternative splicing of the CALCA gene; sensory neurons

Primary research or clinical context: Migraine and pain neuroscience research

One gene, two peptides

Tissue-specific alternative splicing of the CALCA gene yields either calcitonin or CGRP — a textbook example of how a single gene can encode distinct signaling peptides. CGRP predominates in neural tissue.

Research relevance

CGRP receptor biology has become one of the most studied areas in headache neuroscience. This page summarizes that physiology for education and does not offer treatment or dosing guidance.

FAQ about CGRP

What is CGRP?+

CGRP (calcitonin gene-related peptide) is a 37-amino-acid neuropeptide produced by alternative splicing of the calcitonin gene. It is a potent vasodilator and a major focus of migraine and pain-signaling research.

Is CGRP an approved medicine?+

CGRP is discussed here as a research / educational topic. Migraine and pain neuroscience research. This is not medical advice.

What is the typical length of CGRP?+

CGRP is commonly described as approximately 37 amino acids (Neuropeptide).

Related peptides

References & further reading

  1. 1.Wikipedia — Calcitonin gene-related peptide
  2. 2.UniProt — Calcitonin gene-related peptide 1 (CALCA), human (P06881)
Disclaimer: Educational content only. Not medical advice. Not instructions for human use. Research peptides and unapproved products may be restricted or illegal to market for human consumption in your jurisdiction. Consult qualified professionals and applicable law.
You might also like: All peptides · Atlas · Research · Tools
Cite this: Peptides Codex — CGRP educational profile.
Tip: Use browser print (Ctrl/Cmd + P) for a clean PDF of this page.