Herbals use medicinal plants, specifically the active part of such plants, for their therapeutic properties. Throughout history, people have always used plants to heal themselves. The results obtained over millenniums serve as unquestionable reference.

The active ingredients of a medicinal plant are the natural components present in this plant: they give it its therapeutic property. Very often these components are present in minute quantities in the plant. An extraction will be required to isolate a single interesting fraction of the plant.