Fibrinolytics are a class of medications used to dissolve blood clots that can block blood vessels. They work by activating the body's natural process of fibrinolysis, which breaks down fibrin, a protein that helps form clots. These drugs are commonly used in emergencies, such as during a heart attack or stroke, to restore blood flow quickly. Common fibrinolytics include alteplase and tenecteplase. While effective, they carry risks, such as bleeding complications. Therefore, their use is typically reserved for specific situations where the benefits outweigh the potential dangers, and they are administered under careful medical supervision.