indapamide + quinapril

Indapamide + quinapril is an oral fixed-dose combination of a thiazide-like diuretic (indapamide) and an angiotensin-converting enzyme (ACE) inhibitor (quinapril) used for the management of hypertension. Indapamide acts as a mild diuretic and vasodilator, primarily by inhibiting calcium flux in vascular smooth muscle and inhibiting sodium reabsorption in the distal tubule, while also possessing metabolic neutrality and low risk for electrolyte disturbances compared to thiazides[4][7]. Quinapril is a prodrug hydrolyzed to quinaprilat, which inhibits ACE, blocking the conversion of angiotensin I to angiotensin II, thereby reducing vasoconstriction and aldosterone secretion, resulting in blood pressure lowering and potential organ protection[2][3][6]. This combination addresses both volume and vascular resistance mechanisms that contribute to hypertension, and is particularly used in patients with comorbid conditions such as diabetes or heart failure[1]. There is evidence supporting the efficacy and safety of similar ACE inhibitor plus diuretic combinations, with metabolic neutrality and favorable cardiovascular outcomes[1][5]. Indapamide + quinapril is intended for oral administration in patients with mild to moderate hypertension, often where monotherapy is suboptimal for blood pressure control[1].