The implant is a soft piece of plastic that's put in under the skin of the arm.

It contains one hormone (a progestogen), which is very similar to one of women's own hormones.

It lasts for 3 years, but can be taken out at any time.



  • It's extremely good at preventing pregnancy
  • Very convenient, and doesn’t interrupt sex
  • Periods can be lighter and less frequent
  • It helps to make periods less painful
  • It can help pre-menstrual symptoms (PMS)
  • Often suitable for people who can't take oestrogen


  • A small injection of local anaesthetic is needed to put it in
  • Irregular bleeding can be a nuisance (for 1 in 5 women)
  • Some women get side effects like mood changes and changes in sex drive
  • No protection against STIs

You don’t need a break from the implant

It’s perfectly safe to use the implant for as long as it’s needed

Women don’t need a period once a month

The implant stops the lining of the womb from building up – blood doesn’t build up inside, and it can help women feel more energetic if they are not losing iron each month in a period.  Find out more about periods here

The implant does not cause infertility

When women come off the implant, fertility returns to normal very quickly. (It’s important to know that it’s harder to get pregnant as women get older, which is not to do with using contraception in the past).  Find out more about infertility here

Many women are on the implant for its benefits, even if they don't need it for contraception  

Many women find the implant good at controlling period pain, stopping periods, and to level out the moodiness of premenstrual tension

The implant is a great choice for women who find the pill difficult to remember 

The implant lasts for 3 years, so there’s no need to remember to take a pill every day.  Apps and text reminder services are available to help women remember when to change their implant

A clinic visit is needed to ask about any problems with your health and family history

 Some health problems mean that the implant won’t be suitable, but most women can have it.

Good to know

Some women love the implant, and others don't get on with it at all.

The implant is incredibly convenient and can help period pain and PMT.

Periods can change a lot.  About 6 in 10 of women have periods that are lighter or less frequent, although it can be unpredictable. One in five women won’t have any periods at all, and about 1 in 5 will have periods or light bleeding (spotting) that's irregular, heavier or a nuisance. Changes in periods won't cause any harm and won't stop women getting pregnant in future.

Seek advice if irregular periods or bleeding are a problem, because there are ways of settling it down. The implant is easy to take out if it's not the right choice.

How much effort is the implant?

It’s put in under the skin of the upper arm by a trained doctor or nurse and lasts for 3 years. There's a sharp jab from a small injection of local anaesthetic, and then it's not painful when it's put in.

The implant is free from GPs, family planning/contraception clinics and sexual health clinics.  Find out more about where to get the implant here

How effective is the implant?

The implant is the most effective method available – over 99%.  This means that if 100 women used the implant for a year, less than 1 of them will become pregnant. 

How does it work?

The implant temporarily stops your ovaries from releasing an egg each month.  It also thickens the fluid around the neck of the womb (which stops sperm getting to an egg), and makes the lining of the womb thinner so that a fertilised egg won't settle and grow. 

Once it’s taken out, fertility returns to normal very quickly – usually within a week.