depression
"My wife had major mood swings.  Irritable, would stay angry for days about the smallest things.  No sex drive, tired all the time.  An hour after taking the pill, she was a different person.  Happy, more affectionate, less tired, funny, easy going.  A miracle. She said she had always felt as though she was living her life under water or in the clouds and this medicine made things clear.  It's be wonderful. Only side effect has been some bruising."