"i had been on strattera for 8 years. it did great but within last year things seemed to change. i thought it wasn&#039;t working due to my memory and concentration but now being off for about a month realize it was doing a lot. i am now having headaches lack of motivation loosing temper easily etc. my family and friends see a significant change in my behavior. (negative change). concentration and focus have always been an issue on and off medicine so i just have to work harder with it. also realize it takes more than this medicine to really have success."