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PROGESTOGEN-ONLY INJECTIONS (DMPA): WHAT IS IT?


DMPA is a liquid that contains the hormone progestogen, similar to the progestogen in the progestin-only pill. It is given as an injection into the muscle in your arm or buttocks. When people are talking about injectable “hormonal contraception they sometimes just call DMPA ‘the injection’.

The most important thing about DMPA is that it stays in your body and keeps working to stop you getting pregnant for three months at a time.

Are there different types of DMPA? At the moment mere is only one kind of hormone injection you can get m Australia. The same injection is available under two different trade names, Depo-Provera and Depo-Ralovera.

How does DMPA work? DMPA stops a woman’s ovaries from releasing eggs. It makes the mucus m the opening of the cervix thicker, so sperm cannot get through, and it changes the lining of the uterus, so that if by some chance an egg were fertilised, it couldn’t grow there.

How effective is DMPA? DMPA has a 0.1 to 0.6 percent failure rate, which means it is really very effective. If 100 women used DMPA as their method of contraception for a year, there is only a slight chance that even one of them would have an unexpected pregnancy.

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