Ethinyl estradiol / norethindrone
"I am a week into my second pack, and yeah, I'll admit you feel some of the side effects, but none of mine have been as bad as these people are describing theirs. I've had a few headaches, breast tenderness and I spotted once during the last pack. None are HORRIBLE and mimic very very mild PMS. I started taking birth control to control my painful periods, and so far its worked-- my last period was very light and painless. And I've also noticed the side effects have lessened the longer I am on the pill. The pill introduces new hormones in high doses to your body- You can't expect it to just adjust. It takes some time but I believe the longer I'm on the pill, the less I'll feel the side effects. So far, its doing the job I want it to do."