How effective is copper t IUD after 10 years?

The copper T IUD, such as the Paragard, remains highly effective for up to 10 years, with a failure rate of less than 1%. Studies show that its contraceptive efficacy does not significantly decline over the duration of use. After 10 years, it is recommended to replace the IUD to ensure continued protection against pregnancy. Overall, it is a reliable long-term contraceptive option.