First sold in the early 1970s, the Copper Intrauterine Device (IUD) has been a leading contraceptive device for 150 million women worldwide. This method is safe, fast, reversible, cheap, very effective, long-lasting (up to 20 years for some products), and non-hormonal. These features make it unique and desirable for many users. However, due to increased bleeding and pain, up to 15% of users remove the device during the first year. Higher percentages tolerate some of the side effects that occur after IUD insertion, but maintain the use of the method.