Medroxyprogesterone
"I decided to start taking the birth control shot after the birth of my son. I figured it would be worth the convenience of getting the shot every 3 months and not having to remember to take a pill.  Ever since I've started getting the injections my side affects has been SEVERE mood swings, DECREASE in my libido, cramping and nausea. I've never liked the idea of not having a regular cycle; however taking birth control does alter your menstrual cycle. I'm going to have to consider other options for birth control. I can't deal with my severe mood swings! I'm starting to lash out against my family and it hurts. I'm a young 33 year old and my sex drive has gone completely down hill!"