Quick read
Key points
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The copper coil, also known as the copper intrauterine device (IUD), is a small, T-shaped device inserted into the uterus by a doctor or nurse, providing highly effective, long-acting contraception without hormones. It works mainly by making the environment in the uterus hostile to sperm, and can stay in place for 5 to 10 years depending on the specific device.
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Topic-specific prevention and risk reduction will be added during the article-specific evidence audit.
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You're considering the copper coil and want to discuss whether it's suitable for you
01 · Know
What is The Copper Coil?
The copper coil, also known as the copper intrauterine device (IUD), is a small, T-shaped device inserted into the uterus by a doctor or nurse, providing highly effective, long-acting contraception without hormones. It works mainly by making the environment in the uterus hostile to sperm, and can stay in place for 5 to 10 years depending on the specific device.
It's a good option for people who prefer non-hormonal contraception, and can also be used as a highly effective form of emergency contraception if fitted within five days of unprotected sex. Some people experience heavier or more painful periods, particularly in the first few months after fitting.
02 · Understand
Clinical context
It can double as emergency contraception
The copper coil is one of the most effective forms of emergency contraception available, and can be fitted up to five days after unprotected sex — it then continues to provide ongoing contraception afterward if desired.
03 · Act
When to Seek Help
- 1You're considering the copper coil and want to discuss whether it's suitable for you
- 2You experience severe pain, heavy bleeding, or fever after fitting
- 3You can't feel the coil's threads, or think it may have moved
- 4You'd like the coil removed or replaced
04 · Prevent & manage
Practical steps
Check for the Threads Periodically
Your doctor or nurse will show you how to check for the coil's threads after fitting — being unable to feel them, or feeling the coil itself, should prompt a check-up, as this could mean it has moved.
- 1Attend your fitting appointment and follow-up check.A follow-up appointment, usually a few weeks after fitting, checks the coil is correctly positioned.
- 2Learn to check for the threads.Your doctor or nurse will show you how to do this periodically to confirm the coil remains in place.
- 3Expect some initial changes to your periods.Heavier or more painful periods are common in the first few months and often settle over time.
- 4Seek review for concerning symptoms.Severe pain, heavy bleeding, or fever after fitting should be assessed promptly.
Medical information notice
Health education, not individual medical advice
BarnMD Health Library provides general health education for public health literacy. Reading this article does not establish a doctor-patient relationship and this information is not a diagnosis, prescription, or personalised treatment plan. If you have symptoms or concerns about your health, seek appropriate advice from a qualified healthcare professional. If you develop emergency warning signs, seek urgent or emergency medical attention.
BarnMD Bottom Line
The copper coil offers highly effective, long-acting, hormone-free contraception, and can also serve as emergency contraception if needed.
Learning to check for the threads helps you confirm the coil remains correctly positioned over time.