Herbal supplements: considerations in dental practice.

Over-the-counter natural herb products constitute a rapidly growing market in the United States. As with conventional medications, the health care provider needs to be aware of these products' effects, side effects, advantageous synergies, and possible or probable adverse drug reactions. This paper will present 20 of the most frequently used herbs in the United States and discuss appropriate precautions and herb-drug interactions of possible concern in clinical dental practice.