What is the mechanism of action of Digoxin?

Digoxin primarily functions as a positive inotropic agent, which means it increases the strength of heart muscle contractions. This is particularly beneficial for patients with heart failure, as it helps improve cardiac output. Additionally, Digoxin has a negative chronotropic effect, meaning it decreases the heart rate. This dual action is significant because while the drug enhances the force of contraction, it also slows down the heart rate, allowing for more efficient pumping of blood.

The combination of these effects helps in managing various cardiac conditions, especially in patients with atrial fibrillation or heart failure. The increase in contractility and decrease in heart rate can lead to improved symptoms and overall heart function, making this mechanism of action central to how Digoxin is utilized in clinical practice.