Tip for parents: Be sure your child's zinc supplement is not triggering anemia for your child. In my practice, I encounter many ASD kids using biomed who have lapsed into poor iron status due to long term use of high zinc. Children on the spectrum tend to be poor absorbers of minerals in general, and to eat diets that are poor for mineral content - a double whammy. Supplementing is usually a good idea. The thing about zinc is that it competes with iron for absorption, and when given over a period of months at doses like 30mg or more, it can deplete iron status. Signs of low iron in kids: Shiners, lethargy, tiredness; or, paradoxically (in earlier stages of iron depletion), irritability, hyperactivity, poor focus/attention, behavioral reactivity, and learning problems. Have your pediatrician run a blood test for ferritin level if you're not sure. It will be covered on your insurance and can tell you poste haste if you need a different supplement plan. More info: NutritionCare.net