The Intrauterine device (IUD) is available in two main forms.

 

The first is a small copper device which can be fitted at the clinic.  It sits in your womb and offers good contraception for 3 or 5 years or more.  It can cause heavier periods, so will not be suitable for everyone.  Please discuss first with doctor or nurse at the clinic to make sure it is the best method for you.

 

Another device, the IUS or Intrauterine System, also delivers a small quantity of the hormone progesterone to the lining of your womb.  Most people find that after some early irregularity of periods, they settle down and become light or absent.   This is a very effective method and can offer up to 5 years contraception.  It can be fitted in the clinic but should be discussed with doctor or nurse to make sure it is the best method for you.

 

http://www.fpa.org.uk/media/uploads/helpandadvice/contraception-booklets/intrauterine-device-iud-your-guide.pdf