A recent study examined whether or not vitamin and mineral supplements might ease ADHD symptoms, and it yielded encouraging results...For the recent study, Julia Rucklidge and her colleagues from the University of Canterbury in New Zealand used Daily Essential Nutrients (DENs), which contain 13 vitamins, 17 minerals, and four amino acids. Their study was the first fully blinded randomized, controlled trial of children with ADHD who were not taking medication.