Cetrorelix vs Gonadotropin-releasing hormone
A GnRH antagonist — immediate suppression with no flare. The pulsatile hypothalamic driver of the reproductive axis. Side by side: type, evidence tier, receptor, molecular weight, and half-life — the same fields as each monograph, rearranged so the engineering difference is visible.
Cetrorelix | Gonadotropin-releasing hormone GnRH | |
|---|---|---|
| Also known as | Cetrotide | — |
| Type | Analog | Endogenous |
| Evidence | Established | Established |
| Family | Reproductive & gonadal | Reproductive & gonadal |
| Class | GnRH receptor antagonist (decapeptide) | Decapeptide (10 aa) |
| Receptor | GnRH receptor (GnRHR) — competitive antagonist | GnRH receptor (GnRHR), a class A GPCR |
| Molecular weight | ~1,431 Da | ~1,182.3 Da |
| Half-life | ||
| Based on | Gonadotropin-releasing hormone | Native hormone |
Half-life bars are on a logarithmic scale across the molecules shown. Reference values for the native or representative form — educational only, not medical or dosing advice.
Common questions
- What is the difference between Cetrorelix and Gonadotropin-releasing hormone?
- Cetrorelix is an engineered analog based on Gonadotropin-releasing hormone; Gonadotropin-releasing hormone is an endogenous hormone. Cetrorelix signals at GnRH receptor (GnRHR) — competitive antagonist; Gonadotropin-releasing hormone signals at GnRH receptor (GnRHR), a class A GPCR.
- How do the half-lives of Cetrorelix and GnRH compare?
- The reported circulating half-life of Cetrorelix is ~5 h (immediate-release); Gonadotropin-releasing hormone is ~2–4 min. These are reference values for the native or representative form — educational only, not dosing advice.
- Is Cetrorelix the same as Cetrotide?
- Cetrotide is a brand name of Cetrorelix. This comparison describes the molecules, not branded products.
Prefer the other order? Gonadotropin-releasing hormone vs Cetrorelix. Or open the interactive comparison tool to add more molecules.