Norethindrone
"I started taking Jolivette 5 months ago. First, to all you breastfeeding moms out there, I have had NO decrease in milk supply. And that from a woman who had to supplement with first 2 babies within their first 3 months because of low supply and low weight gain. My 3rd baby is now 5 1/2 months old and still exclusively breastfed and gaining weight beautifully. So it doesn't always affect milk supply.  I've taken different BC pills before and always suffered severe anxiety and depression just before starting my period. I was worried about starting another pill but haven't had any problems yet. My first month on these pills I had a heavy period, but haven't had another one since. I'm pretty happy with these pills"