Cetrorelix

China [CN]

Cetrorelix is a medication used to prevent premature ovulation in women undergoing controlled ovarian stimulation for assisted reproductive technologies, such as in vitro fertilization (IVF). It works by blocking the action of gonadotropin-releasing hormone (GnRH), thereby suppressing the release of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) from the pituitary gland. Given as a once‑daily subcutaneous injection for a few days during the treatment cycle, cetrorelix helps ensure that eggs mature at the right time for retrieval. Common side effects include mild injection site reactions, nausea, and headache.