
Långverkande reversibla preventivmedel
LARCs
Granskad av Dr Colin Tidy, MRCGPSenast uppdaterad av Dr Rosalyn Adleman, MRCGPSenast uppdaterad 10 feb 2023
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I denna serie:PreventivmedelsimplantatPreventivmedelsinjektionIntrauterint preventivmedelLevonorgestrel intrauterint preventivmedel
Långverkande reversibla preventivmedel är mycket effektiva metoder för födelsekontroll. När du använder en av dessa behöver du inte komma ihåg något varje dag. De varar mellan 2 månader och 10 år, beroende på vilken metod som används. De kan komma i form av injektioner, implantat och även enheter som placeras i din livmoder.
Överblick
Long-acting reversible contraception (LARC) is a type of birth control.
There are four types of LARC: the implant, the injection, the IUCD, and the IUS.
Once fitted, LARCs can last for three, five, or ten years, depending on the type.
LARCs are very reliable because you do not need to remember to take them daily.
They are reversible, so you can become fertile again after removal.
Vill du få tillgång till preventivmedel online?
Starta en snabb NHS Pharmacy First-konsultation online via Patient.info.
- Online och tillgänglig dygnet runt, behandling kan ofta levereras redan nästa dag.
- Gratis tjänst, just pay the NHS prescription charge online if required.
- Svara bara på några frågor och välj sedan en tid för ett samtal med vårdpersonal.
Drivs av Evaro, en brittisk reglerad vårdtjänst som hjälper över 2 miljoner patienter. Granskad av brittiskt registrerad vårdpersonal.
What are the long-acting reversible contraceptive choices?
There are four types of long-acting reversible contraception (LARC).
P-staven. 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 preventivmedelsimplantat.
P-sprutan. 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 preventivspruta.
The intrauterine contraceptive device (IUCD). 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 intrauterine contraceptive device.
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 intrauterint system (IUS).
Why would I choose long-acting reversible contraception?
LARCs 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.
Which LARC should I choose?
This 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.
Vill du få tillgång till preventivmedel online?
Starta en snabb NHS Pharmacy First-konsultation online via Patient.info.
- Online och tillgänglig dygnet runt, behandling kan ofta levereras redan nästa dag.
- Gratis tjänst, just pay the NHS prescription charge online if required.
- Svara bara på några frågor och välj sedan en tid för ett samtal med vårdpersonal.
Drivs av Evaro, en brittisk reglerad vårdtjänst som hjälper över 2 miljoner patienter. Granskad av brittiskt registrerad vårdpersonal.
Patientval för Preventivmedel

Sexuell hälsa
Gestagenbaserat preventivmedel
Minipiller, som endast innehåller gestagen, används ofta när kombinerade p-piller inte är lämpliga, men används också av många kvinnor som ett val. Det kan tas säkert vid amning.
av Dr Philippa Vincent, MRCGP

Sexuell hälsa
Preventivmedel efter att ha fått barn
Until your baby is 21 days old you cannot become pregnant. After that you will need contraception. There are many choices of contraception after birth available.
av Dr Toni Hazell, FRCGP
Vanliga frågor
What makes LARCs more effective than methods like the pill?
LARCs are considered very reliable because, unlike daily pills, they don't require you to remember to do anything regularly. Once placed, they work continuously for years, which reduces the chance of human error affecting their effectiveness.
How often do I need to visit a doctor for LARC once it's fitted?
After the initial procedure to insert a LARC, you generally don't need frequent doctor visits for contraception. Depending on the type, you can forget about it for anywhere from three to ten years until it needs to be replaced.
Are all LARCs hormone-based?
Most LARCs release a progestogen hormone, such as the implant, injection, and the intrauterine system (IUS). However, there is also the intrauterine contraceptive device (IUCD), also known as 'the coil', which does not release hormones.
If I decide to have children earlier than planned, can I have my LARC removed at any time?
Yes, the term "reversible" in LARC means that if your situation changes and you wish to become pregnant, you can have the device removed. Once it's removed, you can become fertile again.
Is it painful to have a LARC fitted or removed?
The article mentions that inserting the contraceptive implant is a "minor procedure under local anaesthetic." For other LARCs, it states that they "require a small procedure of some sort." The article does not elaborate further on the pain experienced during fitting or removal for any of the devices.
Vidare läsning och referenser
- Long-acting reversible contraception; NICE Clinical Guideline (October 2005 - updated July 2019)
- Trussell J; Preventivmedel misslyckande i USA, Preventivmedel, 2011
- Intrauterine Contraception; Faculty of Sexual and Reproductive Healthcare Clinical Effectiveness Unit (March 2023 - last updated July 2023)
- Sammanfattningstabell för medicinska behörighetskriterier i Storbritannien för intrauterin och hormonell preventivmedel; Fakulteten för sexuell och reproduktiv hälsovård, 2016 - ändrad september 2019
- Preventivmedel - Metoder med enbart gestagen; NICE CKS, september 2022 (endast tillgång i Storbritannien)
Om recensentenVisa fullständig biografi

Dr Colin Tidy, MRCGP
Allmänläkare, Medicinsk Författare
MBBS, MRCGP, MRCP (Paediatrics), DCH
Dr Colin Tidy är en NHS-läkare, baserad i Oxfordshire.
Artikelhistorik
Artikeln finns också på Engelska, Tyska, Spanska, Franska, Italienska, Portugisiska, Hindi, Hebreiska, Arabiska, och Svenska.
Nästa granskning: 9 feb 2028
10 feb 2023 | Senaste versionen
30 okt 2017 | Ursprungligen publicerad
Författad av:
Dr Mary Harding, MRCGP
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