I was on it in high school for a year and then have been on it for most of my 20s til now (31). It made me go from super depressed to hyperactive cheerleader attitude and the shift scared me in high school. Withdrawal caused some brain zapping but overall not bad. Now it's been a life saver for me. It helps with my hallucinations (schizoaffective) and depression and gives me a slight boost in energy.