Contraceptifs réversibles à longue durée d'action
LARCs
Revu par Dr Colin Tidy, MRCGPDernière mise à jour par Dr Rosalyn Adleman, MRCGPDernière mise à jour 10 fév 2023
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Dans cette série :Implant contraceptifInjection contraceptiveDispositif contraceptif intra-utérinDispositif intra-utérin au lévonorgestrel
Long-acting reversible contraceptives are very effective birth control methods. When you use one of these, you do not have to rely on remembering something every day. They last between 2 months and 10 years, depending on the option used. They may come in the form of injections, implants, and also devices which are placed in your womb (uterus).
En un coup d'œil
Long-acting reversible contraception (LARC) provides contraception for months or years.
There are four main types of LARC: the implant, the injection, the IUCD, and the IUS.
LARCs are very effective because you do not need to remember to take a pill daily.
All LARCs require a small procedure for insertion or administration.
LARCs are reversible, meaning you can become fertile again after removal or stopping.
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What are the long-acting reversible contraceptive choices?
There are four types of long-acting reversible contraception (LARC).
L'implant contraceptif. A minor procedure under local anaesthetic is needed to insert the small, rod-shaped implant under the skin in your upper arm, where it remains. The implant releases a progestogen hormone. Each implant lasts three years. Read about the le dispositif contraceptif.
L'injection contraceptive. An injection of a progestogen hormone is given every three months (two months for one brand), most commonly into the muscle in your bottom. Read about the injection contraceptive.
Le dispositif contraceptif intra-utérin (DIU). This is also known as 'the coil'. It sits inside the womb (uterus) and, once fitted, can stay in your womb for up to ten years. The device is called a coil because in the 1960s some devices were coil-shaped. Read about the dispositif contraceptif intra-utérin.
The intrauterine system (IUS). This is a specific type of IUCD which releases a progestogen hormone into the womb. It can last for up to five years. Read about the système intra-utérin (SIU).
Why would I choose long-acting reversible contraception?
Retour au sommaireLARCs are ideal for women who do not want a baby in the near future. This might be because you think you have completed your family and don't want more children, but want to keep your options open. Or it might be because you are young and not wishing to have children for some years to come. Or because you don't want children at all. Or because you are not currently in a position to have children, because of your job, relationship or finances. The great thing about LARCs is the word "reversible" - so if your situation changes, you can stop using them and become fertile again.
You don't need to take a tablet every day, so for most LARCs, you can forget about contraception for years at a time. This makes them more reliable (as they don't need you to remember, other than when they are due to be replaced).
The main downside is that they all require a small procedure of some sort. However, this does not have to be done very often, and provides long-term, reliable contraception once you have done it.
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Which LARC should I choose?
Retour au sommaireThis is an individual choice. Different people will prefer different options. Pros and cons of each are weighed up in the separate leaflet called Contraception Methods, and there is plenty of information about each in their individual leaflets as linked above.
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Santé sexuelle
Dispositif intra-utérin au lévonorgestrel
The levonorgestrel intrauterine device (LNG-IUD), previously known as the intrauterine system (IUS) is a small, flexible, plastic device which sits inside the womb (uterus). There are two threads attached to it which pass out through the neck of the womb.
par Dr Toni Hazell, MRCGP

Santé sexuelle
Implant contraceptif
Un implant contraceptif est un dispositif qui est placé sous la peau afin de vous offrir une dose régulière de contraception sans que vous ayez à prendre une pilule quotidienne.
par Dr Toni Hazell, MRCGP
Questions fréquemment posées
What is the primary benefit of choosing long-acting reversible contraception over other methods?
The main benefit of LARCs is their reliability, as you don't need to remember to take a pill every day. Once in place, they provide contraception for years, meaning you can largely forget about it for extended periods.
How long does each type of LARC protect against pregnancy?
The contraceptive implant lasts for three years. The contraceptive injection needs to be given every three months (or two months for one brand). The intrauterine contraceptive device (IUCD) can stay in for up to ten years, and the intrauterine system (IUS) can last for up to five years.
Can I have children after using long-acting reversible contraception?
Yes, LARCs are 'reversible'. This means that if your circumstances change and you decide you want to have children, you can stop using them and become fertile again.
Are there any minor procedures involved with these types of contraception?
Yes, all LARCs require some form of minor procedure. For example, the implant is inserted under the skin, injections are given for the contraceptive injection, and the IUCD and IUS are fitted inside the womb. However, these procedures are not needed very often.
How often do I need to get the contraceptive injection?
The contraceptive injection is typically administered every three months, although one brand requires an injection every two months.
Are 'the coil' and the IUCD the same thing?
Yes, 'the coil' is another common name for the intrauterine contraceptive device (IUCD). It is called this because some of the original devices in the 1960s were coil-shaped.
Lectures complémentaires et références
- Contraception réversible à longue durée d'action; Ligne directrice clinique NICE (octobre 2005 - mise à jour juillet 2019)
- Trussell J; Échec contraceptif aux États-Unis, Contraception, 2011
- Contraception Intra-utérine; Unité d'efficacité clinique de la Faculté de santé sexuelle et reproductive (mars 2023 - dernière mise à jour juillet 2023)
- Tableau récapitulatif des critères d'éligibilité médicale du Royaume-Uni pour la contraception intra-utérine et hormonale; Faculté de Santé Sexuelle et Reproductive, 2016 - modifié en septembre 2019
- Contraception - Progestogen-only methods; NICE CKS, septembre 2022 (accès réservé au Royaume-Uni)
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À propos de l'auteurVoir la biographie complète

Dr Mary Harding, MRCGP
Médecin généraliste, Auteur médical
BA, MA, MB, BChir, MRCGP, DFFP
Le Dr Mary Harding a obtenu son diplôme de l'école de médecine de l'Université de Cambridge en 1989.
À propos du critiqueVoir la biographie complète

Dr Colin Tidy, MRCGP
Médecin généraliste, Auteur médical
MBBS, MRCGP, MRCP (Paediatrics), DCH
Le Dr Colin Tidy est un médecin du NHS, basé dans l'Oxfordshire.
Historique de l'article
Les informations sur cette page sont rédigées et examinées par des cliniciens qualifiés.
Prochaine révision prévue : 9 févr. 2028
10 fév 2023 | Dernière version
30 oct. 2017 | Publié à l'origine
Écrit par :
Dr Mary Harding, MRCGP

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