Ticlopidine hydrochloride is primarily used as an antiplatelet agent to prevent blood clots in patients at risk of stroke, heart attack, or other vascular events. It is often prescribed for individuals who have recently undergone procedures like coronary stent placement to reduce the risk of thrombosis. Additionally, it is used in patients who cannot tolerate other antiplatelet medications, such as aspirin or clopidogrel. The drug works by inhibiting platelet aggregation, thereby improving blood flow and reducing the likelihood of clot formation. It is particularly beneficial for those with a history of transient ischemic attacks (TIAs) or ischemic strokes.