- Does not interrupt sex
- Works for five years
- Periods may be lighter
- Does not protect against STIs
- Can cause irregular bleeding at first
- Can cause temporary side effects such as skin problems or breast tenderness
No STI protection
Only barrier contraception, such as condoms, prevent STIs from being passed on.
Any sexual contact without a condom may pass on STIs.
Watch out for
Some things make the injection less effective - that means it doesn't work properly!
- If the IUS moves out of place it will be less effective.
- Regular check-ups are important.
Small plastic T-shaped device which releases the hormone progestogen. It is fitted into the womb by a doctor or nurse.
Stops sperm meeting an egg or may stop an egg implanting in the womb.
The IUS is 99% effective when used correctly.