birth control
"For the most part it's been good -- no nasty side effects. However, if you smoke, take caution. Since I've been taking this and have been trying to quit smoking (as birth control increases your risk for heart problems), I've acquired an occasional fluttering heart beat that at times is a bit freaky -- not painful, but certainly something that if it happens often to tell your doctor about. 

Also, coming up on a year of taking it, it loses its effectiveness. For the past three months I will take it regularly (at the same time every day), and by the third week, I'll get my period. For this reason I plan on switching to something with a little higher of a hormone dose. "