“megavitamins and ADHD: the use of very high doses of vitamins and minerals to treat attention deficit hyperactivity disorder is based on the theory that some people have a genetic abnormality that requires higher levels of vitamins and minerals.
However, there is a complete lack of supporting evidence for megavitamin treatment for learning disabilities, and there are no well-controlled studies supporting these claims. Both the American Psychiatric Association and the American Academy of Pediatrics have concluded that the use of megavitamins to treat behavioral and learning problems is not justified.”
Excerpted from: Turkington, Carol, and Joseph R. Harris, PhD. The Encyclopedia of Learning Disabilities. New York: Facts on File, 2006.