Ozagrel hydrochloride hydrate is primarily used in medical applications, particularly as an antiplatelet agent. It works by inhibiting thromboxane A2 synthase, which helps prevent the formation of blood clots. This makes it effective in treating conditions like cerebral thrombosis and ischemic stroke, where reducing clot formation is crucial for improving blood flow to the brain. Additionally, it is sometimes used in managing peripheral vascular diseases to enhance circulation. Its role in preventing platelet aggregation also makes it valuable in postoperative care for patients at risk of thrombotic events.