Hello, one of my 12 yr old daughters has been diagnosed with ADHD and started Concerta. This is the first week and so far all I have noticed is she is more irritable and mouthy. I know it's only been 4 complete days of being on the medication and I need to give it time but is that norma? She is on the lwest dose right now and we are going from there. Our afternoons have been less stressful, i will say that. They use to be awful. I use to dread them coming home from school cause she was just a monster and very loud.