Digoxin (digitalin) is a drug that is extracted from "Digitalis lanata". Digitonin is a steroidal saponin (saraponin) obtained from the foxglove plant "Digitalis purpurea". The best-known species is the common foxglove, "Digitalis purpurea". Increase of ectopic pacemaker activity can occur when pseudoephedrine is used concomitantly with digitalis. Cardiac failure is managed by bed rest, salt restriction, digitalis and diuretics. Amiodarone can worsen the cardiac arrhythmia brought on by digitalis toxicity. Na/K-ATPase by binding to the same receptor sites as the digitalis glycosides such as ouabain. Digitalis works by inhibiting sodium-potassium ATPase. These glycosides are found in the plant genera "Digitalis", "Scilla", and "Strophanthus". There are also other commercial uses for "Digitalis lanata" other than heart conditions. Common examples include lithium, thyroxine, and digitalis. Treatment may also be modeled after that for digitalis, which produces somewhat similar cardiotoxic effects. Many would obey, tossing away bottles of digitalis, nitroglycerine, and other important maintenance medications. The General had been poisoned with an overdose of the heart medication digitalis. It is sometimes associated with digitalis toxicity in patients with heart disease.