"i was diagnosed with adhd at the age of 7. i started with concerta to treat it but as time went on the side effects and the dosage being 135mg was getting annoying. i have noticed that focalin xr has fewer side effects than concerta. also, i eat a good deal more and i can sleep when taking it. i also read in the comments that the maximum dosage is 20mg? i take 35mg and will probably up my dose. other than that it is a very good medication."