Intrauterine System (IUS)
An IUS is a small, T-shaped contraceptive device that fits inside the womb and releases the female hormone progestogen into the body.
Most women can have the IUS fitted, including women who have never been pregnant.
An IUS is a long-lasting and reversible method of contraception, but it cannot stop you getting sexually transmitted infections (STIs).
It must be fitted by a trained doctor or nurse at your GP surgery, contraception and sexual health clinic.
The IUS that is available in the UK is called Mirena and works for up to five years after being fitted. If you are 45 or older when you have the IUS fitted, it may be left until you reach the menopause or you no longer need contraception.
The IUS is over 99% effective in preventing pregnancy and is very effective as a long-lasting method of contraception.
You do not need to remember to take or use contraception to prevent pregnancy.
Please note that YorSexualHealth is only able to to fit coils for contraceptive purposes, not for heavy periods/menstrual bleeding.