Hallo! (female, 32 years old) I started to take Concerta pills (18mg) 1month ago. I felt a really soft result, but only during the first week. Now I can't stay focused, I'm very very restless, extremely inattentive. In your experience, do you think that I do not tolerate this medication or would it be the dosage? I'll start tomorrow with 27 mg. What is the key to knowing that I need to change the medication? How did it happen to you? thank you for your attention