The medicine or drug digitalis is also known as Digoxin and belongs to the class of medicines called digitalis glycosides.
Digitalis is a medicine that is most commonly used to treat patients with congestive heart failure.
It's also used to treat patients with other heart problems such as heart rhythm problems (atrial arrhythmias).
So the drug digitalis is essentially a type of drug used to treat heart failure and other heart problems so it's a heart medication.