The implant

The implant is:

  • 99% effective

What is it?

It is a small flexible rod which is placed just under the skin on the inside of your upper arm. It can be felt under the skin but you can’t see it.

How does it work?

The rod slowly releases the artificial female hormone progestogen known as etonogestrel. This stops ovulation (an egg being released). It also thickens the mucus at the neck of the womb. This makes it difficult for sperm to enter the womb. It also thins the lining of the womb.

It is important that you talk to a doctor who will assess what contraceptive option is best for you


  • It does not interrupt sex.
  • It works for up to three years.
  • It may reduce painful periods.


  • It may cause irregular bleeding or no bleeding at all.
  • Will only last for 3 years.
  • The bar can be affected by medicines such as some epilepsy medications, St John’s Wort, tuberculosis medications and meningitis prevention drugs like rifambucin. Talk to your GP or family planning doctor if you are concerned.
  • Insertion and removal must only be done by a specially trained doctor.
  • It does not protect against sexually transmitted infections.