What it is?
A small flexible rod containing the hormone progestogen. It is inserted under the skin, usually on the upper part of the arm, and will last for up to three years.
How it works?
The hormone progestogen stops ovulation release of an egg) and thickens the mucus around the cervix, which makes it difficult for sperm to get into the womb.
Advantages
Does not interrupt sex. Works for up to three years. Fertility returns immediately implant is removed.
Disadvantages
Does not protect against sexually transmitted infections (STIs). Periods may be irregular or stop altogether. Can cause headaches and skin problems.
How effective is it?
The implant is 99% effective. This means that 1 in 100 women who use implants will get pregnant each year.
What makes it less effective?
Some prescribed and complementary medicines.
Can anyone use this method?
The implant is not suitable for all women. A doctor or nurse will need to know about a woman's medical history and any illnesses suffered by immediate members of her family, to find out if there are any medical reasons why it might not be suitable.