Throughout human history, medicinal plants have been used to treat a variety of ailments. In fact, over 100 pharmaceutical drugs and medicines trace their origins to chemical compounds found in plants. For example, the medication Taxol, which is a powerful chemotherapeutic medication used to treat breast cancer, is extracted from the Pacific Yew plant, while the medication Digoxin, used to treat irregular heartbeats, is extracted from the Foxglove plant.