What is the primary therapeutic use of clopidogrel?

Clopidogrel is primarily used to prevent blood clots in patients with cardiovascular disease. It is an antiplatelet medication that works by inhibiting platelet aggregation, which is a critical step in the formation of blood clots. This is particularly important for individuals who have conditions such as a history of heart attack, stroke, or peripheral arterial disease, where the risk of clot formation is significantly increased. By preventing clots, clopidogrel helps to reduce the likelihood of serious cardiovascular events, improving patient outcomes and survival rates.

Other therapeutic uses mentioned in the options do not align with the pharmacological actions of clopidogrel. It does not regulate blood pressure, alleviate pain, or treat infections, as these actions are associated with different classes of medications. This focus on clopidogrel's role in vascular health and thromboembolic prevention highlights its significance in managing cardiovascular risks.