Medicinen anvendes sammen med et andet hormon kaldet FSH (follikel stimulerende hormon), for at fremkalde udviklingen af follikler, som er den struktur i æggestokken, der modner æggene (oocytter).
The medicine is used together with another hormone called FSH (follicle stimulating hormone), to bring about the development of follicles which are in the ovary, the structures maturing the eggs (ova).