Medicines & protocols
Clomiphene blocks oestrogen feedback at the pituitary, increasing FSH release. It can thin the endometrium and affect cervical mucus, which is one reason letrozole is now often preferred, particularly in PCOS.
Also known as: Clomid, clomifene
Related Canada guides
Sources
- Society of Obstetricians and Gynaecologists of Canada (SOGC) patient information
Last reviewed: September 9, 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.