The Renin-Angiotensin-Aldosterone System (RAAS) plays a central role in regulating blood pressure and fluid balance. RAAS inhibitors are a class of drugs used to manage conditions like hypertension and heart failure. These medications work by blocking the actions of angiotensin II, a potent vasoconstrictor. By doing so, they help dilate blood vessels and reduce the volume of circulating blood, ultimately lowering blood pressure. In addition to their cardiovascular benefits, RAAS inhibitors also exhibit renoprotective effects and may find utility in the treatment of kidney diseases.