LYCOS RETRIEVER 
Provera: Injections
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Depo-Provera is a progestin injection. Progestins in general help prevent fertilization by preventing a woman's egg from fully developing. In addition, they cause changes at the opening of the uterus that make it more difficult for sperm to reach the egg. The Depo-Provera injection is administered in either the woman's buttock or he upper arm. It is repeated four times a year for year-round pregnancy prevention.
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Depo Provera is a hormonal form of birth control that is given by injection every 3 months (13 weeks). It is prescribed by doctors, nurse practitioners and nurse midwives, and can only be administered by your health care provider. Depo Provera is intended only to prevent pregnancy and offers no protection against STD's.
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Depo-Provera is reversible and has no permanent effect on fertility. However, after the last injection there can be a nine-month delay in return to normal fertility. If you are thinking about becoming pregnant in the next year or two, Depo-Provera will not be the right choice for you.
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Depo-Provera has no permanent effect on your fertility, but it may take you up to a year after the injections stop to begin ovulating again. Your menstrual periods may return to normal in six months to a year, but that's not an indication of your fertility.
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Depo-Provera contains a synthetic (man-made) form of the hormone progesterone, called depot medroxyprogesterone acetate (DMPA). The Depo-Provera injection gives 3 months protection against pregnancy. You should get one injection every 3 months (13 weeks) to get the best protection against pregnancy. It is safe to get your injection up to 2 weeks early if your 3-month appointment date does not fit into your schedule.
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To provide effective contraceptive cover, Depo-Provera must be given every 12 weeks. Make sure that you or your doctor make your next appointment for 12 weeks time. If you are more than two weeks late for your next injection, you will not be protected against pregnancy. You will need to have a pregnancy test before your next injection can be given. If the injection is given more than two weeks late (ie more than 98 days since your last injection) you will need to use additional barrier methods of contraception, eg condoms, for the next seven days.
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