Ethinyl estradiol / etonogestrel
"I have been on Nuvaring for a year now and it is the most effective and worry free method of BC I have ever used. I did gain some weight on it but I'm a stressed out college student. while I think the ring is great has had some adverse side effects for me personally. I have terrible back pain with my periods even thought they are short lasting 3-4 days. I have such a decreased sex drive and it is so affected and sometimes puts a strain on my relationship, (I have been with him for 3 years so he's been thru the BC changes and has noticed himself)..and the ring has probably made my aniexty worse, I did not have anxiety problems until using the ring, they are mild episodes but still annoying to have. havent gotten pregnant so it's good for that"