My grandson is 11 and he is given Concerta and Intuniv each morning. He is given his meds with breakfast that consists of either toast loaded with jelly falling off the bread, poptarts, donuts, etc. followed by a day filled with candy, cookies and milkshakes. I feel the junk/sugar has an effect on this child but he is fed this way every day. I feel like the sugar works against the meds. Does it have any effect?