Leuprolide
A GnRH agonist that suppresses the axis through continuous stimulation.
Also known as Lupron, Eligard.
Turning a pulsed signal into a constant one shuts the axis off. The clinical trick is the physiology read exactly backwards.
Identity
- Class
- GnRH receptor agonist (nonapeptide analog)
- Source
- Synthetic analog of GnRH
- Receptor
- GnRH receptor (GnRHR)
Key properties
Evidence floorClinicalREF1CLIN1Approximate values for the native hormone; engineered analogs are often deliberately larger and far longer-acting. Each figure carries its own provenance tier, and the floor is the weakest of them - the Standard.
Mechanism
Leuprolide is a long-acting GnRH agonist. Because GnRH normally signals in pulses, continuous agonist exposure first causes a transient surge ('flare') and then desensitizes the receptor — paradoxically shutting the axis down. Depot formulations exploit this to maintain chronic suppression.
Reference notes
- It suppresses the reproductive axis by overriding GnRH's required pulsatility — continuous stimulation desensitizes the receptor.
- An initial hormonal 'flare' precedes suppression — a direct consequence of the agonist mechanism.
- Depot formulations release the drug over months to sustain the effect.
Common questions
- What is Leuprolide?
- A GnRH agonist that suppresses the axis through continuous stimulation. Structurally it is GnRH receptor agonist (nonapeptide analog).
- How does Leuprolide work?
- Leuprolide is a long-acting GnRH agonist. Because GnRH normally signals in pulses, continuous agonist exposure first causes a transient surge ('flare') and then desensitizes the receptor — paradoxically shutting the axis down. Depot formulations exploit this to maintain chronic suppression.
- How strong is the evidence for Leuprolide?
- PeptideHormone grades Leuprolide at the "Established" evidence tier — its mechanism and core effects are settled across the peer-reviewed literature. It is catalogued as an engineered analog built on an endogenous hormone, and the tier is an editorial judgment about the public literature that can change as the science does.
- What is the half-life of Leuprolide?
- The reported circulating half-life of Leuprolide is ~3 h (depot formulations act for months).
- Is Leuprolide the same as Lupron or Eligard?
- Lupron, and Eligard are brand names of Leuprolide — the same molecule in different approved presentations. This page is the molecule reference, not a prescribing guide.
Selected literature
Curated peer-reviewed reviews, sourced from PubMed. Selected for relevance, not exhaustive — open any entry on PubMed for the full record and its primary citations.
- 1.Leuprorelin. A review of its pharmacology and therapeutic use in prostatic disorders · Drugs & aging, 1991 · PMID 1794035
- 2.Clinical pharmacokinetics of depot leuprorelin · Clinical pharmacokinetics, 2002 · PMID 12083977
External references
Leuprolide in the public knowledge graph — the same entity resolved across the authoritative chemistry and protein databases.