Contraception Injection

What is it?

Contraceptive injection is a hormone injection that you can receive from a health-care professional four times a year, or every 12-13 weeks.

How does it work?

Contraceptive injection prevents the ovary from releasing an egg, thickens the cervical mucus making it difficult for sperm to reach the egg, and changes the lining of the uterus making implantation difficult.

Does it prevent sexually transmitted infections?

Remember that most birth control or contraceptive methods will not protect a person from sexually transmitted infections (STIs).  To reduce the risk of STIs, including HIV, use a condom with another method of contraception. This is referred to as dual protection.

To be effective, birth control must be used correctly and consistently. If you want to prevent pregnancy, choose a method that you and your partner will use every time you have intercourse.

Talk to your health-care provider or visit a sexual health clinic to find out what might work best for you and your partner.

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Last updated: 2023-07-25