What are ACE inhibitors primarily used for?

ACE inhibitors are primarily used to help relax blood vessels. They achieve this by inhibiting the enzyme angiotensin-converting enzyme, which plays a crucial role in the body's blood pressure regulation. By blocking this enzyme, ACE inhibitors prevent the conversion of angiotensin I to angiotensin II, a substance that usually causes blood vessels to constrict. Relaxation of the blood vessels leads to decreased vascular resistance and, consequently, lowered blood pressure.

This mechanism makes ACE inhibitors particularly effective in treating conditions such as hypertension and heart failure, as they help improve blood flow and reduction in workload on the heart. Understanding this function is essential in the context of cardiovascular health, as managing blood pressure is a key factor in preventing heart-related diseases.