This study will enroll 250 women at 16 different sites across the United States to test an investigational hormonal IUD that is not yet on the market. We are testing the IUD to find out how well it prevents pregnancy.
Our study is testing an investigational birth control pill that is not on the market. The pill contains both estrogen and progestin. The estrogen used in the study pill may cause fewer side effects than the estrogen used in pills that are currently on the market. This study will find out how effective this pill is at preventing pregnancy and learn more about side effects and bleeding patterns during pill use. Approximately 2000 women will take part in this study at different research centers across the US.