Ethinyl estradiol / etonogestrel
"I was on Nuvaring for 3 years then stopped to have my son. After he was born my husband and I were worried about long term cost of birth control. We decided to go with Mirena.  Let's just say, going back to Nuvaring was the best decision we've made. Been back on it for 3 months and just like before, no negative side effects what so ever. A little more discharge but no problems and its very effective. Only method we use and have never gotten pregnant while on it. I absolutely love Nuvaring and would recommend it to anyone. May not be for everyone but definitely right for me."