Intrauterine System (IUS)
The IUS is a small plastic device that releases the hormone progesterone when it is put into the womb.
How it Works
It works in several different ways - by stopping the sperm from meeting the egg, by delaying the egg getting to the womb, or by preventing the egg from implanting in the womb.
- Does not interrupt sex
- Works as soon as it is inserted
- Can stay in for five years
- Suitable for women who have completed their family
- Certain medication can interfere with its effectiveness. In this instance another method of contraception would have to be used.
- May cause irregular bleeding for the first few months
- Insertion and removal must be done by a specially trained doctor
- Does not protect against sexually transmitted infections