Cardiotonic agents are medications that help improve the heart's ability to pump blood. They are often used to treat conditions like heart failure and certain types of arrhythmias. By increasing the strength of heart contractions, these agents can enhance blood flow and reduce symptoms such as fatigue and shortness of breath. Common types of cardiotonic agents include digoxin and dobutamine. These drugs work by affecting the heart's electrical system and increasing calcium levels in heart cells. While they can be effective, they also require careful monitoring due to potential side effects and interactions with other medications.