birth control
"Bad: I took it for about a year, then it gave me bad acne that automatically cleared away when I took a 2 week break from it, and automatically came back when I got back on it. It has also make my hair so dry, frail and frizzy regardless of how good I take care of it. My blood pressure, anxiety and mood swings also fluctuated when I was on and off this pill. 
Good: makes my periods ultra light, almost never cramp. Haven't gotten pregnant.

Overall I would not recommend it if you can be on something else."