"What's he done this time?" How many times have I heard a parent say this after I've commandeered the school phone to call home about their child's behavior. While it is no picnic to teach a class populated with ADHD kids, life is infinitely harder for Mom and Dad, the long-suffering people Dr. Abram Hoffer calls "battered parents." And with good reason.

by Helen Saul Case
Magnesium deficiency is found more frequently in children with attention deficit hyperactivity disorder (ADHD) than in healthy children. In one study of ADHD children, magnesium deficiency was found in 95 percent of those examined. Does this warrant magnesium supplementation for hyperactive children? The answer is yes.

In a group of children supplemented with about 200 milligrams (mg) per day of magnesium for six months, there was "an increase in magnesium contents in hair and a significant decrease of hyperactivity" compared to children in the control group who had not been treated with supplemental magnesium

By Andrew W. Saul PhD 

ADHD is not caused by a drug deficiency.
But it may indeed be caused by profound nutrient deficiency, more accurately termed nutrient dependency.
Although all nutrients are important, the one that an ADHD child is most likely in greatest need of is vitamin B-3, niacinamide.