birth control
"I've been on the Nuvaring for 4 months now. It is effective as a birth control and has cleared up my skin a bit, although I still get a few hormonal cysts a month. It has not affected my mood and it pretty much feels like I'm not on anything. Most days I wonder if it is even in, but it always is when I check. One side effect is I have lost 15 pounds since I started it."