Comparison
Ganirelix vs. Histrelin
Two peptides side-by-side — identity, evidence base, legal status and known adverse events.
Identity
Category
Research other
Research other
CAS no.
123246-29-7
220810-26-4
Molecular weight
1570.3 g/mol
1323.52 g/mol
Half-life
no data
no data
Sequence
no data
no data
Mechanism of action
Ganirelix
Ganirelix competitively and reversibly binds the pituitary GnRH receptor, rapidly suppressing LH (and, less so, FSH) release — without the initial hormone 'flare' of GnRH agonists.
Histrelin
Continuous GnRH-agonist stimulation downregulates and desensitises the pituitary GnRH receptors — after the initial rise, LH, FSH and the sex hormones fall persistently.
Evidence base
Highest evidence
Human RCT
Human RCT
Studies
1
0
of which in humans
1
0
Effects recorded
2
2
Open conflicts
0
0
Documented adverse events
1
1
Legal status
Full entries
Frequently asked questions
- What is the difference between Ganirelix and Histrelin?
- Ganirelix is classified as "Research other", while Histrelin is classified as "Research other". Ganirelix: Ganirelix is a synthetic decapeptide and GnRH antagonist. In assisted reproduction (IVF) it prevents the premature LH surge during controlled ovarian stimulation. Histrelin: Histrelin is a nonapeptide GnRH agonist delivered as a once-yearly implant. Approved for central precocious puberty in children (Supprelin LA) and advanced prostate cancer (Vantas). This page contrasts both neutrally and source-based — with no usage or dosing recommendation.
- Which peptide is better supported by science, Ganirelix or Histrelin?
- The highest available evidence level is "Human RCT" for Ganirelix and "Human RCT" for Histrelin. A higher evidence level means more robust data, but says nothing about suitability for an individual. The full body of evidence is on each peptide's own page.
- What is the legal status of Ganirelix and Histrelin in Germany and the United States?
- Germany: Ganirelix — Prescription, Histrelin — Prescription. United States: Ganirelix — Prescription, Histrelin — Prescription. These are factual summaries with source and review date on the individual pages.