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The Gonadotropins

Gonadotropins are fertility drugs that may be prescribed when you are undergoing fertility treatment such as in vitro fertilization (IVF) or intrauterine insemination (IUI). There are several different types: human menopausal gonadotropins (hMG). follicle stimulating hormone (FSH) and human chorionic gonadotropin (hCG). Fertility doctors typically use a combination of hMG/hCG or FSH/hCG to stimulate ovulation.

  • Human menopausal gonadotropins (HMGs) contain approximately equal amounts of follicle stimulating hormone (FSH) and luteinizing hormone (LH). hMG is administered by injection and directly stimulates the ovaries to induce the development and ovulation of one or more follicles.
  • Follicle stimulating hormone (FSH) is an injectable drug containing genetically engineered FSH and is used to stimulate ovulation and help the ovaries produce multiple eggs..
  • Human chorionic gonadotropin (hCG) helps with the final maturation of the eggs and triggers the ovaries to release the mature eggs.

Your fertility doctor may begin hMG or FSH on day two or three of the menstrual cycle. The goal is to achieve one or more mature follicles and an appropriate estrogen level so that ovulation can be triggered by an hCG injection. Ovulation usually occurs about 36 hours after hCG is administered through an injection.

Ask your fertility doctor questions about types of gonadotropins, how you take them and pregnancy success rates with the fertility drugs. For more information on all fertility drugs, click here.

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