The active ingredient of Cetrotide is cetrorelix acetate. It is an antagonist of the GnRH hormone, which acts on the pituitary gland producing the release of two other hormones, LH and FSH.
For this reason, when a patient is administered Cetrotide, the effect is the opposite. This means that GnRH is blocked, so FSH and LH are not secreted and, therefore, ovarian activity is slowed down.
Read the full article on: Use of Cetrotide in IVF: Application and Mechanism of Action ( 35).
By Andrea Rodrigo B.Sc., M.Sc. (embryologist), Marta Barranquero Gómez B.Sc., M.Sc. (embryologist), Paloma de la Fuente Vaquero M.D., Ph.D., M.Sc. (gynecologist), Zaira Salvador B.Sc., M.Sc. (embryologist) and Romina Packan (invitra staff).
Last Update: 04/11/2025