LANOXIN P.G. is a brand name for the medication digoxin, which is primarily used in the treatment of various heart conditions, including atrial fibrillation, atrial flutter, and sometimes heart failure that cannot be managed by other medications alone. It belongs to a class of medications known as cardiac glycosides and works by increasing the force of heart muscle contractions as well as moderating the heart rate. This action helps to improve blood circulation and reduce symptoms associated with heart failure, such as shortness of breath and swelling in the legs. LANOXIN P.G. is available in tablet form and is typically prescribed for long-term management of heart conditions. It is crucial for patients taking this medication to adhere closely to their doctor's instructions and to monitor for potential side effects, as the therapeutic range of digoxin is narrow and individual sensitivity to the drug can vary.