My 9 year old son was diagnosed with ADHD. He has excessive eye blinking so the Dr. prescribed Kapvay saying that would help with his tick. He started on .1 at night for one week, then we moved to .2, .1 in the morning and .1 in the evening. He started waking up every night with nightmares and had trouble sleeping so the Dr. decreased his dose back down to .1 which I give him in the morning. He was fine for the first 4 or 5 days and now he is back to having trouble sleeping and waking up with nightmares. Has anyone experienced anything like this? He has always been a good sleeper, 10-11 hours a night since he was 4 months old.