Norethindrone
"I've been using Lyza for about 9 months. I got a year's supply from Planned Parenthood for free. I haven't had any negative side effects when I take it correctly. I don't bleed as much during my period but my cramps are still the same. My only complaint is if I'm more than 3 hours late taking the pill I will get a period in the next couple of days, regardless of where I am in my cycle."