Hormonal coil (IUS)


What the packet says

What is Levosert?

Hormonal ingredients

What's it made of?

Levosert is made of a small white T-shaped frame made from a plastic called polyethylene. The hormone is contained within a silicone substance called polydimethylsiloxane. This is surrounded by a membrane (skin) also made of polydimethylsiloxane. There are two fine threads, made of polypropylene and copper phtalocyanine blue, attached to the bottom of the frame

How Levosert works

The Hormonal coil is a small, T-shaped plastic device that is inserted into your womb by a doctor or nurse. It releases the hormone progestogen gradually into your womb which prevents pregnancy by making the fluid in your cervix thicker (which makes it more difficult for sperm to enter the womb), and preventing the lining of your womb thickening enough for an embryo to grow in it. Sometimes it can also stop you ovulating.

Levosert side effects

  • Spots or acne
  • Increased sweating
  • Vaginal Discharge
  • Womb Cramps
  • Headaches


  • During intercourse
  • Daily
  • Monthly
  • 1 - 3 Months
  • 1 - 3 Years
  • 3 - 5 Years
  • Permanent
  • Similar to

    Clinical effectiveness



    Contains hormones


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    Detailed information

    How to get started with a hormonal coil

    Women ask us lots of questions about getting a coil fitted – so we’ve put together a guide on everything you ever wanted to know about the coil. Below are a few key points to consider:

    • To get a coil fitted you need to go to a GP surgery or sexual health clinic where some staff are trained to fit them. You can contact your GP and ask if they fit coils, or search for clinics that fit coils here.
    • The coil can be fitted at any time during your monthly period cycle, as long as you’re not pregnant (although you may prefer to get it fitted when you’re not on your period).
    • Your doctor or nurse will do some tests to make sure that you can have the coil – like making sure that you’re not pregnant and checking for infections or STIs.
    • Your doctor or nurse will use a speculum (like when you have a smear test) to open up your vagina and then insert the coil through the cervix into the womb. Most women find this uncomfortable.
    • If it’s fitted in the first seven days of your cycle, you’ll be protected against pregnancy straight away. If it’s fitted at any other time, you’ll need to use condoms or other contraception, for seven days afterwards.
    • You will normally go back for a check up 3-6 weeks after getting it fitted.

    How to stop using an IUS

    • Your coil can be removed at any time by a trained doctor or nurse. It’s simpler than having it fitted – they will use a  gently pull on the threads and the T shape folds up and it can be pulled out of the womb.
    • If you’re not having another coil put in and don’t want to get pregnant, you’ll need to make sure you don’t have sex seven days before you have it removed, or use condoms or another method.
    • Check out our survey results to see how long it took most women’s cycles to return to their definition of ‘normal’ and read up about other after effects they’ve experienced.

    Things that can go wrong

    • There’s a small risk of infection after it’s been fitted. This may occur when harmless bacteria normally found in vagina are pushed inside the womb. You’ll know it’s infected if you have unusual discharge, there’s a strong smell, or you develop a high temperature or chills.
    • Around 1 in 20 coils can fall out or be pushed out by the womb, this is most common in the first few weeks of getting it fitted, or during a period. If this happens, head to your doctor or nurse to get a check up.
    • If the coil doesn’t work and you get pregnant, there’s also a small increased risk of ectopic pregnancy – when the egg implants outside the womb, normally the fallopian tubes. However, the overall risk of ectopic pregnancy is less in women using a coil than in women using no contraception at all.
    • Very occasionally the threads get lost. This happens to about 1 in 100 women, and is more commonly caused by the threads being pulled up inside into the cervix. They may notice this when you go to have the coil removed, and sometimes the threads can reappear naturally.
    • Even more occasionally (1 in 1000 chance) the coil goes through the wall of the womb into the abdomen. This is called ‘perforation’ and it this happens, they can remove the coil via surgery.


    Hormonal coil (IUS)


    After years of different methods, I chose the IUS after my third child as I wanted something long term without me having...
    Hormonal coil (IUS)


    Not a fan. My boyfriend could feel it during sex; it made me bleed after sex; loss of libido; made me spottier when my s...
    Hormonal coil (IUS)


    I inserted this coil back in January 2020. The experience to get it inserted in itself was different than I thought. The...
    Hormonal coil (IUS)


    Having this inserted was a very painful experience. Not the insertion but the cramps that came straight after. I spent t...
    Hormonal coil (IUS)


    I have been using Levosert for approximately 8 months now but I believe this has had a huge impact to my cognitive beha...