COMPOSITIONS FOR EFFECTING CONTRACEPTION OR PREVENTING BREAST CANCER COMPRISING MELATONIN OR A COMBINATION OF MELATONIN WITH PROGESTOGEN AND/OR AN ESTROGEN

摘要

A method of effecting contraception in human females comprises administering an ovulation-inhibiting amount of melatonin. Optionally, the melatonin is administered in combination with a progestogen and/or an estrogen. The administration of melatonin also provides a method of preventing breast cancer in women.