This study will enroll 1600 women at 45 different sites across the United States to test an investigational non-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 vaginal ring that is not yet on the market. The ring is designed to deliver estrogen and a form of progestin called Nestorone. This study will find out how well this product prevents pregnancy and track side effects during ring use. Approximately 300 women will take part in this study at different research centers across the US. If you join the study, you will use the ring for one year. All study supplies, exams and tests are provided at no cost to you.