Medicines
Ganirelix (for example Fyremadel) prevents premature ovulation during stimulation. Your clinic's protocol and the product leaflet always take priority.
Also known as: Fyremadel, Orgalutran
Related United Kingdom guides
Sources
Last reviewed: 23 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.