Non-hormonal coil (IUD)
The non-hormonal coil, also known as the copper coil or IUD (intrauterine device) is a small T-shaped piece of copper and plastic. It sits in the womb (uterus) and lasts for up to 10 years. It’s a very effective contraceptive but it can make your periods longer and heavier.
frequency: fit and forget
effectiveness: over 99%
STI protection? no
periods: can get heavier
It doesn’t contain hormones. It’s very effective and lasts for up to 10 years. After it’s removed your fertility returns to what’s normal for you.
It works by causing a mild inflammatory reaction in the lining of the womb. This stops sperm and eggs from surviving so fertilisation does not happen. It has a backup effect of preventing a fertilised egg from attaching in the womb.
It’s fitted by someone with specialist training. Some people find it painful, others don’t. It’s effective as soon as it’s fitted.
The non-hormonal coil can cause longer, heavier periods.
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