The implant
A trained clinician places a flexible rod under local anaesthetic. It can be felt under the skin and removed through a small procedure. Irregular bleeding is the most common reason for review.
The injection
Injections are repeated on schedule. Long-term use can temporarily reduce bone density, which generally recovers after stopping; individual risks and benefits should be discussed.
Choosing between them
Consider how you feel about a small procedure, injections, unpredictable bleeding, repeat appointments and how quickly you might want pregnancy.
Common questions about contraceptive implant and injection
- Which is more effective, implant or injection?
- Both are highly effective; the implant is over 99% effective and removes the risk of a late repeat injection.
- Will periods stop?
- They may stop, become irregular, lighter, heavier or more frequent. The pattern is difficult to predict before starting.
- How soon can I get pregnant afterwards?
- Fertility usually returns quickly after implant removal. After injections it may take up to a year, though some people conceive sooner.
Sources
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