What part of FOXGLOVE is used in medicine?

The leaves of the foxglove plant (Digitalis purpurea) are used in medicine, primarily to extract cardiac glycosides, such as digoxin and digitoxin. These compounds are utilized to treat heart conditions, particularly congestive heart failure and certain arrhythmias, by improving the strength and efficiency of heart contractions. However, due to their toxicity, their use is carefully monitored and prescribed by healthcare professionals.