I was tried on Cymbalta several years ago and had a severe reaction to it. I could not balance sitting or standing nor could I look into the distance without toppling over. I developed a disabling headache within 15 minutes of taking the first dose but continued taking it for three days before being able to reach my primary care doctor. It took several days for the symptoms to subside but they did. I hope those taking it don't have the same experience I did.