This website has been developed and fully funded by Bayer plc for a UK audience only. Disclaimer and side effect reporting information can be found at the bottom of the page.

Intrauterine System (IUS)

Intrauterine System (IUS)


    The IUD (Intrauterine Device) is a small plastic T-shaped device covered by copper or other metals which is inserted in the cavity of the womb. The IUS (Intrauterine System), is made of two components: the plastic T-shaped device and a cylinder containing progestin hormone, which is released slowly from the system. The IUS and IUD have a number of different characteristics and work in a different way. Talk to your doctor or healthcare provider to find out which option is more appropriate for you.

    Getting an IUS fitted is usually well tolerated by most women. Some women may experience pain and dizziness after insertion, which usually settles after resting for a short time. Normal pain killers or local anaesthetic may be applied prior to the insertion.

    While it is very unlikely, it is possible for IUS to fall out completely or partially. If you notice your bleeding is heavier than usual during your period, it may be a sign that the IUS has fallen out either completely or partially. If the IUS falls out, you may not be protected from pregnancy. You should avoid intercourse or use a barrier contraceptive (such as condoms) and consult your doctor or healthcare provider.

    Yes, you can have it removed at any time by your doctor or healthcare provider if your life plans change.

    GP visit

    Talking to your doctor

    Get the information you need for an informed discussion with your doctor.


    Learn more

    PP-UN-WHC-GB-0149 January 2024


    The health information on this site has been reviewed and approved by Bayer by an appropriately qualified medical reviewer. It is intended as general information only. It is not intended to replace a consultation with a healthcare professional, to provide specific medical advice or replace the patient information leaflet provided with your medicine. Treatments discussed here should be initiated under medical supervision. For full information including side effects and eligibility for treatment, please consult your healthcare professional. Always speak to your doctor or nurse for personal medical advice.


    Images on this site are stock images and for illustrative purposes only.


    Reporting side effects

    If you get any side effects whilst taking a medicine, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in the package leaflet. You can also report side effects directly via the yellow card scheme at By reporting side effects, you can help provide more information on the safety of medicines.