The contraceptive injection contains a progestogen that prevents pregnancy for several months. This method is reliable when injections are repeated on time, but can change bleeding patterns, temporarily reduce bone density and delay the return of fertility.
- Irregular spotting or bleeding is common, especially in the first few months.
- With longer use, bleeding usually decreases, and some users stop having periods altogether.
- Immediately put the latest date for your next injection in your phone and diary, and book the appointment early.
- Use condoms with new or changing partners, because the contraceptive injection does not prevent sexually transmitted infections (STIs).
- Make an appointment if your injection is late, you have had unprotected sex or you think you may be pregnant.
- For urgent GP care outside normal opening hours, call HAP 9252. Call Ambulance 912 only for an immediately life-threatening situation.
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General information, not personal medical advice
This article has been carefully prepared but may contain errors or become outdated as medical knowledge changes. It does not replace diagnosis, examination or treatment by your own GP. Always discuss personal questions and starting, stopping or changing medicines or treatments with your own GP.
For a life-threatening situation, call Ambulance 912. For urgent care outside office hours, call HAP 9252.
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