- An IUS (intrauterine system), also called a hormonal coil, is a small plastic T-shape that a doctor or nurse puts into your womb (uterus). It stops pregnancy by releasing the hormone progestogen into your womb.
- An IUS is not suitable for everyone.
- An IUS is over 99% effective and lasts for 3 to 8 years, depending on the type.
- An IUS is safe to use while breastfeeding and can usually be fitted soon after giving birth.
- After an IUS is removed your fertility returns to previous levels straight away.
- An IUS can make periods lighter, shorter, and less painful. It can be an effective treatment for heavy periods.
- An IUS can be used as part of hormone replacement therapy (HRT) for menopause symptoms.
- This information is about the hormonal coil. For information about the copper coil, see intrauterine device (IUD).
- You can compare different methods, including how well they work and side effects, when choosing a method of contraception.
Information:
An IUS does not stop you getting or passing on sexually transmitted infections (STIs). Use a condom every time you have sex to protect you and your partner against STIs including HIV.