Nutrient/supplement vs placebo study had limitations when trying to determine if it helped manage ADHD in children. Typically, the press release tends to promote certain positive but not negative outcomes.

Medical Mythbusting Commentary for May 5, 2022

Source:
Vitamins, minerals improve symptoms for children with ADHD

Reference:
Micronutrients for Attention-Deficit/Hyperactivity Disorder in Youths: A Placebo-Controlled Randomized Clinical Trial