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Intrauterine CoNtraception (IUC) - COIL

There are 2 types of intrauterine contraception (IUC) which are small plastic devices placed in the womb by a trained clinician

  1. Copper intrauterine device (IUD) contains copper which prevents sperm from reaching an egg and it makes it difficult for a fertilised egg to settle in the womb (prevents implantation).
  2. Intrauterine system (IUS) releases the hormone progestogen, which prevents the sperm reaching an egg. It also prevents an egg settling in the womb (implantation). The levels of hormone reaching the blood stream are very low.

For information on intrauterine contraception we recommend that you watch this short film (from NHS Lothian), as it gives you all the information you need about intra-uterine methods. Alternatively read the information below.

Reliability

Intrauterine devices are very effective. Less than 1-2 women in 100 users will get pregnant over 5 years of use.

Possible Side Effects

Possible risks at time of insertion

Advantages / Benefits

Hormone IUS

Copper IUD

Suitability

Who can provide it?

Sexual Health Services and some GPs (see list) are trained to fit IUC

download
List of GP's who fit IUD/IUS. (PDF 47Kb)


Comments

If you are under 25, have a new sexual partner or more than one sexual partner in the last year then you will require testing for chlamydia and gonorrhoea before or at the time of insertion. If you have a discharge or any symptoms the IUD would not be put in until we have the results. Women are taught to feel the threads in their vagina to check the position. If there is a risk of pregnancy it cannot be inserted except the copper IUD can sometimes be inserted as emergency contraception