Researchers from the University of Canterbury, at Christchurch, New Zealand reviewed the evidence supporting the use of nutritional and herbal supplements to treat attention-deficit/hyperactivity disorder (ADHD).

First, the details.

  • Published evidence on single ingredients (eg, minerals, vitamins, amino acids, and essential fatty acids), botanicals, and multi-ingredient formulas were reviewed.

Warning: The evidence is sparse, mixed, and lacking consistency. Links are added to summaries presented previously on this blog.

And, the results.

  • The best evidence
    • Zinc (2 positive studies)
  • Mixed evidence
  • More research needed
    • Vitamins
    • Magnesium
    • Iron
    • SAM-e
    • Tryptophan
    • Ginkgo biloba with ginseng
  • No supporting evidence
  • Multi-ingredient approaches are intriguing but under-researched.

The bottom line?
Slim pick’ns

4/7/09 19:34 JR

Hi, I’m JR

John Russo, Jr., PharmD, is president of The MedCom Resource, Inc. Previously, he was senior vice president of medical communications at, a complementary and alternative medicine website.