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Depo-Provera is one of the most effective, reversible contraceptives. If administered correctly, the effectiveness rate is 99.997%. Depo-Provera does not offer any protection against STDs.

A hormone is injected that prevents the ovaries from releasing eggs. It also thickens the cervical mucus, which also keeps sperm from joining with an egg.

• Convenient
• Each dose prevents pregnancy for 12 weeks
• Reduces menstrual cramps
• Offers protection against ovarian cysts
• Offers protection against endometrial cancer
• Does not need to be taken daily

• Women who may try to get pregnant within a year
• Women who cannot put up with irregular bleeding
• Women who have serious liver disease

• Irregular intervals between periods
• Longer menstrual flow
• Spotting between periods
• No bleeding for months at a time

Less common side effects include weight gain, sore breasts, headache, depression, dizziness, skin rashes, vaginal dryness and an increase or decrease in sex drive.