NCIt definition : Any benzothiadiazide derivative or other thiazide-like agent with diuretic and anti-hypertensive
activity. Thiazide diuretics inhibit the sodium-chloride transporter in the distal
tubule in the kidneys, thereby suppressing sodium and chloride reabsorption from the
distal convoluted tubules (DCT) and increasing the excretion of sodium, chloride,
potassium and water. In addition, thiazide diuretics decrease excretion of calcium
and uric acid. These agents cause vasodilation possibly by activating calcium-activated
potassium channels in vascular smooth muscle and inhibiting various carbonic anhydrases
in vascular tissue.;