Thanks for your suggestions Suzanne. The meds my son is on at the moment are great for focus and impulse control but he doesn’t feel sleepy at all at any reasonable hour. I’ve had a terrible trouble waking him for school since he’s been on it and one day I couldn’t get him there until midday. I’m going to ask for a melatonin prescription tomorrow when I have a phone consultation with his ADHD nurse practitioner. I looks as though it works for a lot of ADHDers.