Hi All- We have been working with DS9 for several months trying to find a good medication for his inattentive-ADHD. We've tried Straterra, Intuniv and Vyvance. We started Ritalin this week. We started with 5 mg, then increased to 10 mg, then to 15. We saw no affect with the 5 or 10 mg dose. With the 15 mg dose, we saw a positive affect. Yesterday was his first day with the 15 mg dose. I noticed he was very withdrawn and grumpy around dinner time last night (when his afternoon dose would have been wearing off). I tried to find out if anything was bothering him, but he said no. This morning, I asked again if anything had been wrong and he said he just felt grumpy for no good reason. I know ritalin can do this. I'm wondering if any of you have any experience with this and whether it gets better over time?