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Contraceptive Injection


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What is it? 

Depo -Provera contraceptive injection protects you against pregnancy for 12 weeks.

How does it work? 

The injection contains progestogen. Progestogen thickens the mucus in the cervix, which stops sperm reaching an egg. It also thins the lining of the womb so that an egg can't implant itself there. In all women, the injection stops ovulation (the release of an egg).

How effective is it?

If used correctly it's more than 99% effective. This means that less than one woman in 100 who uses the injection will become pregnant in a year.

Added benefits?


Purple petal     The injection lasts for eight weeks or 12 weeks, so you don't have to think about contraception every day or every time you have sex.    


Purple petal    It can be useful for women who might forget to take the Pill every day.


Purple petal   It can be useful for women who can't use contraception that contains oestrogen.      


Purple petal   It is not affected by medication.  


Purple petal   It may provide some protection against cancer of the womb.  

What else should I know?


Purple petal    Side effects can include weight gain, headaches, mood swings, breast tenderness and irregular bleeding.    


Purple petal   The injection works for 12 weeks. It can't be removed from your body, so if you have side effects, they will persist during these weeks, and for some time afterwards.


Purple petal   Your periods may become more irregular or longer, or stop altogether (amenorrhoea). Amenorrhoea is a common effect of the contraceptive injection. It's not harmful, but you may want to take it into consideration.      


Purple petal   There's treatment available if your bleeding is heavy or prolonged. Talk to your doctor or nurse about this.  


Purple petal   It can take up to one year for your fertility level to return to normal after the injection wears off, so it may not be suitable if you want to have a baby in the near future.  


Purple petal   Using Depo-Provera affects your natural oestrogen levels, which can cause thinning of the bones. This isn't a problem for most women because the bone replaces itself when you stop the injection, and it doesn't appear to cause any long-term problems.  

Thinning of the bones may be a problem for women who already have risk factors for osteoporosis (such as low oestrogen, or a family history of osteoporosis). It may also be a concern for women under 19 because the body is still making bone at this age. Women under 19 may use Depo-Provera, but only after careful evaluation by a doctor.

By using condoms as well as the injection, you'll help to protect yourself against sexually transmitted infections (STIs).

Contraceptive injection is freely available from Contraception Clinics. Use the Service Finder to find a clinic that’s most convenient for you. Or call our Central Booking line 01772 401140 for more information on this method or to book an appointment.







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