Captopril is primarily used in the treatment of which condition?

Captopril is primarily used in the treatment of hypertension. This medication belongs to a class of drugs known as ACE inhibitors, which work by inhibiting the angiotensin-converting enzyme. This action results in the relaxation of blood vessels, leading to a decrease in blood pressure. By preventing the conversion of angiotensin I to angiotensin II, captopril reduces vasoconstriction and decreases fluid retention, both of which contribute to elevated blood pressure levels.

In the context of treating hypertension, captopril can also have additional beneficial effects, such as improving heart function in patients with heart failure and providing protection against damage to organs, particularly the kidneys, in diabetic patients. This makes captopril a versatile drug in the management of conditions associated with high blood pressure.

Other options represent conditions for which captopril is not indicated. Asthma treatment typically involves bronchodilators and anti-inflammatory medications rather than ACE inhibitors. Seizures are managed with anticonvulsants, and hyperlipidemia is treated with statins and other lipid-lowering agents rather than captopril. Thus, the use of captopril is specifically aligned with its application in hypertension management.