Medroxyprogesterone
"I got my first depo provera shot in May of 2015. I bled for two months straight, but I was warned that this would happen. It was annoying in the summer but it wasn't super heavy and it all stopped one day. Now, I've gotten the shot 3 more times (I think) since then and I haven't bled a drop! I don't know why everyone says they've bled so much. Also, I'm very happy and I've lost 10 pounds since before my first shot. This birth control is the best! I'm only in my first year of it, so I hope I'm not speaking too soon, but it has been a blessing. I would also just like to note, however, that I received my first shot while I was on the 1st day of my period. I think this is important, because the doc said so. Good luck!"