Scientific evidence has shown that food choices and certain supplements can improve health and symptoms of disease. As a result, many Americans are self-prescribing and spending in excess of $30 billion annually on herbal and dietary supplements to address their health concerns. It is important for health care providers to receive timely, evidence-based information in order to address the risks and benefits of supplements with their patients. In this dynamic partnership with patients, providers also need information about regulatory issues, dosing and product potency.