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GnRH agonist (nonapeptide analog)

Histrelin

Histrelin is a synthetic GnRH agonist peptide administered as a subcutaneous implant that releases drug continuously over about a year. It is an approved prescription medicine for central precocious puberty in children and for hormone-sensitive prostate cancer in adults. This page is educational and is not medical advice.

By The Peptides Codex Editorial TeamReviewed July 10, 2026
Length
9 aa
Class
GnRH agonist (nonapeptide analog)
Function
Gonadotropin-releasing hormone receptor agonist
Context
Approved medicine for central precocious puberty and hormone-sensitive prostate cancer, delivered by subcutaneous implant (prescription)

Delivered as a 12-month subcutaneous implant for continuous GnRH receptor activation.

Also known as: Supprelin LA · Vantas · GnRH agonist

Part of the Foundational & therapeutic peptides cluster

Overview

Histrelin is a synthetic GnRH agonist peptide administered as a subcutaneous implant that releases drug continuously over about a year. It is an approved prescription medicine for central precocious puberty in children and for hormone-sensitive prostate cancer in adults. This page is educational and is not medical advice.

Source & context

Biological / chemical source: Synthetic GnRH analog

Primary research or clinical context: Approved medicine for central precocious puberty and hormone-sensitive prostate cancer, delivered by subcutaneous implant (prescription)

Implant delivery

Rather than repeated injections, histrelin is placed in a small hydrogel implant under the skin of the upper arm. Continuous release maintains receptor desensitization, suppressing gonadotropins and sex hormones until the implant is removed or replaced.

Peptide design

Histrelin is a nonapeptide GnRH analog with a D-histidine substitution and an ethylamide C-terminus. These modifications increase potency and metabolic stability relative to native GnRH, supporting the long-duration implant format.

FAQ about Histrelin

What is Histrelin?+

Histrelin is a synthetic GnRH agonist peptide administered as a subcutaneous implant that releases drug continuously over about a year. It is an approved prescription medicine for central precocious puberty in children and for hormone-sensitive prostate cancer in adults. This page is educational and is not medical advice.

Is Histrelin an approved medicine?+

Histrelin: Approved medicine for central precocious puberty and hormone-sensitive prostate cancer, delivered by subcutaneous implant (prescription). Always follow licensed medical guidance for approved products.

What is the typical length of Histrelin?+

Histrelin is commonly described as approximately 9 amino acids (GnRH agonist (nonapeptide analog)).

Related peptides

References & further reading

  1. 1.Wikipedia — Histrelin
  2. 2.PubChem — compound summary for Histrelin (CID 25077993)
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.
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Cite this: Peptides Codex — Histrelin educational profile.
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