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[2] [3] It decreases blood pressure mainly by hydrochlorothiazide while triamterene decreases the amount of potassium lost. [2] [3] The combination was approved for medical use in the United States in 1965. [5] In 2022, it was the 116th most commonly prescribed medication in the United States, with more than 5 million prescriptions. [6] [7]
Chlortalidone is considered a first-line medication for treatment of high blood pressure. [2] Some recommend chlortalidone over hydrochlorothiazide. [1] [15] A meta-analysis of randomized controlled trials found that chlortalidone is more effective than hydrochlorothiazide for lowering blood pressure, while the two drugs have similar toxicity.
Triamterene is commonly prepared in combination with hydrochlorothiazide for treatment of hypertension (high blood pressure) and edema (water retention). This combination is in a class of medications called diuretics or 'water pills', and causes the kidneys to get rid of the body's unneeded water and sodium through the urine .
Chlorthalidone and hydrochlorothiazide are diuretics used to lower blood pressure. Learn more about the primary differences between these two medications.
Hydrochlorothiazide, sold under the brand name Hydrodiuril among others, is a diuretic medication used to treat hypertension and swelling due to fluid build-up. [4] Other uses include treating diabetes insipidus and renal tubular acidosis and to decrease the risk of kidney stones in those with a high calcium level in the urine. [4]
Potassium-sparing diuretics act to prevent sodium reabsorption in the collecting tubule by either binding ENaCs (amiloride, triamterene) or by inhibiting aldosterone receptors (spironolactone, eplerenone). This prevents excessive excretion of K + in urine and decreased retention of water, preventing hypokalemia. [10]
Chlorthalidone is the thiazide drug that is most strongly supported by the evidence as providing a mortality benefit; in the ALLHAT study, a chlorthalidone dose of 12.5 mg was used, with titration up to 25 mg for those subjects who did not achieve blood pressure control at 12.5 mg. Chlorthalidone has repeatedly been found to have a stronger ...
amiloride, spironolactone, eplerenone, triamterene, potassium canrenoate. Inhibition of Na+/K+ exchanger: Spironolactone inhibits aldosterone action, Amiloride inhibits epithelial sodium channels [17] 5. cortical collecting ducts: Thiazides: bendroflumethiazide, hydrochlorothiazide: Inhibits reabsorption by Na + /Cl − symporter: 4. distal ...