Some really great advice and suggestions here so I’m not sure this is needed but I wanted to share our success story. Son diagnosed with severe ADHD in kindergarten. We were at a private school where all the kids in his class were a year older and at that age, developmentally the difference was enormous (we never even thought about holding him back for that advantage). The Dr. said he would not be able to function without drugs. Wife did a ton of research and we decided to try to find food sensitivities/triggers. We cut everything for a week except raw fruits and vegetables and slowly added foods back 1 at a time. We found anything artificial was a huge trigger, particularly artificial colors and preservatives. Gluten as well. We found we could tell within minutes when he ate something he was not supposed to eat. He would wet himself, get very emotional, act wildly. At the same time there happened to be an acupuncturist from Costa Rica staying with my sister so we signed him up for 10 treatments. I didn’t believe any of that stuff but I figured why not. After just a few treatments, along with the very strict diet the change was striking. We moved schools and kept this up through 5th grade. Very strict diet, virtually no cheating, healthy clean eating. He’s excelled, never been on drugs and he’s going to be a senior next year and he’s absolutely crushing it in school. We moved out onto a lake 7 years ago and didn’t keep it up but he’s found ways to cope as he’s gotten older. One additional upside is because he ate so clean for all those early years, he is in great physical shape from not eating all the crap kids eat. He doesn’t have the physique of any kid I’ve seen. TLDR: diet can have a big role in behavior, it’s extremely difficult to maintain (no cheating) but we found it, along with acupuncture, he’s been able to achieve things I nor the medical community thought was possible. Good luck! I know how difficult and emotional this all can be.