What is Letrozole Used For?
Letrozole (Femara) is an oral medication used to stimulate ovulation, treat polycystic ovary syndrome (PCOS) symptoms or for those diagnosed with unexplained infertility. Letrozole’s use will depend on your fertility diagnosis or previous treatment history. It is typically prescribed for a treatment course of 5 days.
How Does Letrozole (Femara) Work?
Letrozole works by inhibiting aromatase and blocking the amount of androgens your body makes which then causes estrogen to decrease. Now your pituitary gland responds by producing follicle-stimulating hormone (FSH) and triggers the ovary to produce an egg.
In women who are ovulating, Letrozole can stimulate the development of multiple follicles and eggs to be released, often known as controlled ovarian hyperstimulation. This improves your chance of pregnancy as compared to a natural menstrual cycle where only one egg is released.