Some women cannot have children because they cannot produce enough follicle stimulating hormone (FSH) and luteinising hormone (LH). When this happens the ovaries fail to produce an egg during the menstrual cycle - a condition known as anovulation. Anovulation can be treated by giving replacement FSH and LH. Pergoveris is a medication that contains both FSH and LH. It is used for the treatment of anovulation in women who do not produce enough FSH and LH.