Depro-Provera is a highly effective form of contraception. An injection of a progestogen hormone which is slowly released into the body is given once every three months. This prevents ovulation and interferes with eggs leaving the ovaries, as well as causing a thickening of the cervical mucus and changes in the lining of the uterus which prevents sperm from entering the uterus.
Before commencing Depro-Provera a medical examination is required to check blood pressure, breasts and pelvis The injection is given in the buttocks or upper arm. Depro-Provera begins to give protection against pregnancy within 24 hours of the first injection, which must be given within five days of the beginning of a period unless the woman has been using the Pill or an IUD. As the effect slowly wears off over time protection from pregnancy after the 3 month mark is not assured.