How long does Implanon last after its expiry date?
Implanon (the etonogestrel implant) is designed to work for up to 3 years when inserted. After the labeled expiration date, protection can decrease, and pregnancies can occur if it’s no longer active enough to suppress ovulation. In practice, you should not rely on it past the end of the 3-year approved duration.
If you’re past the expiration date, use another form of contraception right away (like condoms or another hormonal method) until a clinician replaces the implant or you switch methods.
What to do if your implant is past 3 years (or the expiration date on your card)
The safest approach is to arrange replacement as soon as possible. If you had sex since the implant may no longer have been fully effective, ask a clinician about emergency contraception and whether you need a pregnancy test, based on how long it’s been since expiration.
Can the implant still work even if it’s “expired” on paper?
The implant’s effectiveness is expected to drop after the approved period. Even if some hormone may still be released, you can’t assume reliable pregnancy prevention after the 3-year window, so it shouldn’t be treated as “still good” after expiry.
How soon after replacement does protection return?
Contraceptive protection generally returns immediately after a new implant is inserted (assuming it’s done promptly when the old one is removed). Your clinician may still advise a short period of backup contraception depending on timing.
When should you get it replaced?
Get it replaced at the end of the 3-year duration from insertion (not from the calendar date printed elsewhere). If you don’t know your insertion date, confirm it with the person who placed it or your medical records.
What if I want to keep using it but I’m already past the expiration date?
If it’s past the labeled duration, you should switch to reliable contraception (backup method) and plan replacement rather than continuing the implant as-is.
Where to find your exact timing
Use the insertion date (often recorded on your implant card or in your clinic notes). The 3-year lifespan is tied to insertion time.
Sources:
1. https://www.nhs.uk/conditions/contraception/implant-contraception/
2. https://www.acog.org/womens-health/faqs/implants-and-intrauterine-devices-iuds