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Provera: Pregnancy
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Depo-Provera is an injectable form of birth control that is prescribed by your healthcare provider and protects you against pregnancy for a full three months. It works by preventing your egg cells from maturing. If an egg is not released from the ovaries during your menstrual cycle, it cannot become fertilized by sperm and result in pregnancy. Depo-Provera ... causes changes in the lining of your uterus that make it less likely for pregnancy to occur.
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Depo-Provera... known as "the birth control shot," is a hormone much like the progesterone a woman produces during the last two weeks of her monthly cycle, after her body has determined it does not contain a fertilized egg. Progesterone causes the cervical mucus to become thicker, so sperm cannot reach the egg, and also changes the lining of the uterus so implantation of a fertilized egg cannot occur. Depo-Provera mimics these conditions, preventing pregnancy from occurring.
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Depo-Provera inhibits the production of another hormone, gonadotropin. This, in turn, prevents ovulation. Depo-Provera ... causes changes in the lining of the uterus that make pregnancy less likely to occur. Depo-Provera's estimated effectiveness in preventing pregnancy is 99%, on a par with Norplant, the contraceptive implant. Norplant contains another synthetic progestin hormone called levonorgestrel.
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Depo Provera slowly releases the synthetic form of progesterone medroxyprogesterone acetate and protects against pregnancy for a period of 11 to 14 weeks. This method prevents ovulation, so there is no egg available for a sperm to fertilize. It ... works by thickening cervical mucus, which makes it harder for sperm to swim through. The progestin in Depo Provera can thin out or prevent the growth of uterine tissue. This makes it difficult for a fertilized egg to implant into the uterine wall since there is not enough lining there to receive it.
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Depo-Provera is given by a shot in the arm or buttocks, and must be given once every 3 months to be effective. It prevents pregnancy by stopping ovulation. It stops the eggs in the ovaries from ripening and being released each month. Depo-Provera ... causes changes in the lining of the uterus.
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If Depo Provera is taken with aminoglutethimide (Cytadren), a drug used to treat a disorder of the adrenal glands called Cushing's syndrome, it could make the Depo Provera less potent, which could lead to unexpected pregnancy. Check with your doctor before taking Cytadren if you are on Depo Provera.
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