Injectable hormonal contraceptive
Depo Provera® and Depo Ralovera® are brand names of synthetic hormones (progestogen) that can be given by injection every 3 months to prevent pregnancy.Depo Provera® does not stop you getting an STI so it's important to use condoms.
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How does it work?
Depo Provera® and Depo Ralovera® works in 3 ways, it:
- temporarily prevents ovulation (an egg from being released from the ovaries every month).
- temporarily thins the lining of the womb (uterus) to prevent a fertilised egg from attaching to it.
- thickens the discharge (fluid) from the cervix to help stop sperm from reaching the womb (uterus).
Depo Provera® and Depo Ralovera® are 99% effective in preventing pregnancy.
Things to consider
- It is very convenient as you only need 1 injection every 3 months.
- You need to go to your doctor or health service to have the injection.
- You need to remember to book regular appointments so that your injections are given in time.
- Once given, the injections cannot be reversed or cancelled – you just have to wait for the hormone to reduce over time.
- It contains no oestrogen, so may be safer for some people, including smokers and people who cannot take the pill.
- Body weight, stomach upsets or medications do not reduce its effectiveness.
- Many people stop getting periods after the first couple of injections.
- Irregular bleeding may occur after the first few injections.
- Most people start having periods and become fertile again 4 to 8 months after their last injection, but it can take longer for some people.
- It does not protect against STIs.
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