My son was diagnosed almost 20 years ago.
The meds then were particularly awful.
I did the research, and reduced refined sugar to almost nothing, and got rid of caffeine all together.
But, I think the big difference came by adding quality omega-3 to the multi vit+min that he was on.
Try omegabrite.com. Their kid suppliments are wonderful. They take at least a month to six weeks to fully kick in, but it made a big difference.
BTW, my son was never on any meds and did just fine.
I’ve researched omega 3’s and vitamins. It seems that those with ADHD are very deficient in omega 3’s, vitamin B, magnesium, and calcium. The vitamin B’s they tend to burn through quickly. I’ve also researched probiotics and enzymes. There seems a correlation there as well.
Caffeine has been known to calm hyper kids down.