Streptokinase is widely used in medical settings as a thrombolytic agent to treat blood clots. It works by activating plasminogen to plasmin, which breaks down fibrin clots, making it effective in treating conditions like myocardial infarction (heart attack), pulmonary embolism, and deep vein thrombosis. Its ability to dissolve clots quickly helps restore blood flow to affected areas, reducing tissue damage and improving patient outcomes. Additionally, it is sometimes used in cases of arterial thrombosis and occluded catheters. Due to its bacterial origin, it may trigger immune responses, so its use is often limited to initial treatments or specific clinical scenarios.