French to English Medical Medical: Pharmaceuticals HRT preparations (menopause)

I'm translating patient information for drugs that treat the symptoms of menopause. The introduction includes an explanation of what the menopause is, as follows:
"La ménopause correspond à l’arrêt de la fonction ovarienne (absence d’ovulation et de menstruations). Le “capital ovules” de la femme est épuisé et la sécrétion d’hormones" (oestrogènes et progestérone) s’arrête."
I'm a bit stuck finding a translation for "capital ovules". The only thing I can think of is "ccrucial eggs". Is there a more "official" translation?