Treatment with Human Menopausal Gonadotrophin can lead to hyper-stimulation of the ovaries. This, however, mostly becomes clinically relevant only after HCG has been administered to induce ovulation (please see Undesirable effects paragraph). No therapy is necessary when a slight hyper-stimulation is present (Level I) accompanied by a slight enlargement of the ovaries (over size 5-7 cm), excessive steroid secretion, and abdominal pain. The patient should be informed, however, and carefully watched. Clinical supervision and symptomatic treatment, and perhaps an intravenous volume replacement in case of high hemoglobin concentration, is necessary if hyper-stimulation (Level II) with ovarian cysts (ovary size 8-10 cm) is present, accompanied by abdominal symptoms, nausea, and vomiting. Hospitalization is imperative when serious hyper-stimulation (Level III) with large ovarian cysts (ovary size more than 10 cm) is present accompanied by ascites, hydrothorax, enlarged abdomen, abdominal pain, dyspnea, salt retention, hemoglobin concentration, increased blood viscosity, and platelet aggregation with the danger of thromboembolisms. Undesirable effects Sensitivity to Human Menopausal Gonadotrophin – Febrile reaction which may be accompanied by chills, musculoskeletal aches or pain, malaise and fatigue have occurred after the administration of Human Menopausal Gonadotrophin. It is not clear whether or not these were pyrogenic responses or possible allergic reactions. In addition, reports of “flu-like symptoms” including fever, Chills, musculoskeletal aches, joint pains, nausea, headache and malaise have been received – Gastrointestinal symptoms (nausea, vomiting, diarrhea, abdominal cramps, bloating). – Pain, rash, swelling and/or irritation at the site of injection. – Body rashes. – Dizziness, tachycardia, dyspnea, tachypnea. The following medical events have been reported subsequent to pregnancies resulting from Human Menopausal Gonadotrophin therapy: – Ectopic pregnancy. – Congenital abnormalities