Ganirelix Acetate acts by competitively blocking the gonadotropin-releasing hormone (GnRH) receptors on the pituitary gonadotroph and subsequent transduction pathway. It induces a rapid, reversible suppression of gonadotropin secretion. The suppression of pituitary luteinizing hormone (LH) secretion by Ganirelix Acetate is more pronounced than that of follicle-stimulating hormone (FSH). An initial release of endogenous gonadotropins has not been detected with Ganirelix Acetate, which is consistent with an antagonist effect. Upon discontinuation of Ganirelix Acetate, pituitary LH and FSH levels are fully recovered within 48 hours. Ganirelix Acetate must be present at the receptor site continuously to displace native GnRH.
Ganirelix Acetate Injection is indicated for the inhibition of premature luteinizing hormone (LH) surges in women undergoing controlled ovarian hyperstimulation.
Before prescribing Ganirelix Acetate Injection, please read the accompanying Prescribing Information.