FOCUS is a combination herbal medicine that some people on the board have had success with. I have not tried it, for my sons. The ingredients are:
Ginkgo Biloba, Scuttellaria Laterifolia (also known as Skullcap)
Matricaria Recutita (also known as German Chamomile)
Centella Asiatica (also known as Gotu Cola)
Avina Sativa (Green Oats), also called Hawer
Urtica Urens, called Umbabazane in Africa
Aspalathus linearis (also know as Rooibos)