Copper
"I am a 21 year old college student and first went on a hormonal birth control (lutera) when I was 18 to help with irregular periods--and after almost a month on it I was a raging hormonal maniac. I was too traumatized for awhile to look into other options and then I thought a non hormonal IUD would be the solution to my birth control woes. My first insertion went relatively smoothly--I psyched myself out before hand but it was just uncomfortable, not painful. Unfortunately 3 months after insertion the IUD partially expelled. A month later I had a new one put in which I've had for a year now, and though I still get painful, heavy periods with some spotting between (a trade off I can handle),I really am happy with my decision to get ParaGard."