Try Helpful Herbs
Several herbs have been recommended for managing ADHD symptoms, including ginkgo, St. John’s Wort, rhodiola, and ginseng. Most have been poorly researched, with two exceptions.
In a large European study on hyperactivity and sleep problems, a combination of valerian and lemon balm helped to relax children with ADHD by reducing anxiety. I use these herbs regularly for kids who deal with these problems. Consult a naturopathic doctor to find the appropriate dose for your child.
To improve attention, a new herbal product, called Nurture & Clarity, was developed, and carefully tested, by a team of practitioners in Israel. The children taking it demonstrated significant improvement, as measured by their performance on the Test of Variables Attention, a computerized measurement of attention. I would not make definitive recommendations based on one study, but this product is worth looking into. You can read about it at adhd-clarity.com.
Finally, pycnogenol, an extract made from French maritime pine bark, has been shown to improve ADHD symptoms in a limited amount of research. I have found that the herb helps improve concentration in some children.
One last thought: Herbal products vary greatly in quality, and some contain contaminants. You should find a knowledgeable professional to help you identify reliable sources of pure, standardized herbs.