Comparison
Ganirelix vs. Octreotide
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
83150-76-9
Molecular weight
1570.3 g/mol
1019.24 g/mol
Half-life
no data
1.7 h
Sequence
no data
D-Phe-Cys-Phe-D-Trp-Lys-Thr-Cys-Thr(ol)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.
Octreotide
Octreotide is a cyclic octapeptide that selectively binds somatostatin-receptor subtypes SSTR2 and SSTR5. Via G-protein-coupled signalling, adenylyl cyclase is inhibited, reducing the secretion of multiple hormones (growth hormone, IGF-1, glucagon, insulin, VIP, serotonin). Structural stabilisation via a disulfide bridge and D-amino acids extends the half-life relative to natural somatostatin (minutes to several hours).
Evidence base
Highest evidence
Human RCT
Human RCT
Studies
1
5
of which in humans
1
4
Effects recorded
2
3
Open conflicts
0
1
Documented adverse events
1
2
Legal status
Full entries
Frequently asked questions
- What is the difference between Ganirelix and Octreotide?
- Ganirelix is classified as "Research other", while Octreotide 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. Octreotide: Synthetic octapeptide somatostatin analog with a longer half-life than endogenous somatostatin. FDA- and EMA-approved since the 1980s for acromegaly and neuroendocrine tumours. This page contrasts both neutrally and source-based — with no usage or dosing recommendation.
- Which peptide is better supported by science, Ganirelix or Octreotide?
- The highest available evidence level is "Human RCT" for Ganirelix and "Human RCT" for Octreotide. 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 Octreotide in Germany and the United States?
- Germany: Ganirelix — Prescription, Octreotide — Prescription. United States: Ganirelix — Prescription, Octreotide — Prescription. These are factual summaries with source and review date on the individual pages.