birth control
"The birth control kept me from getting pregnant so on that subject it worked great.  But, I had 3 severe side effects that really affected my quality of life.  I was exhausted all of the time, no energy ever (after I stopped taking it within 1 week I had energy again). I had intense headaches everyday within an hour of taking this medicine, and I was very emotional.  One moment nice next moment sad, then mean. It has been a month since I took this birth control and I fell like me again!!"