Comparative Pharmacology
Head-to-head clinical analysis: CHLORTHALIDONE versus DYAZIDE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: CHLORTHALIDONE versus DYAZIDE.
CHLORTHALIDONE vs DYAZIDE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Thiazide-like diuretic; inhibits sodium-chloride cotransporter in distal convoluted tubule, increasing excretion of sodium, chloride, and water. Also lowers peripheral vascular resistance.
Dyazide is a combination of hydrochlorothiazide, a thiazide diuretic that inhibits the Na+/Cl- cotransporter in the distal convoluted tubule, reducing sodium and water reabsorption; and triamterene, a potassium-sparing diuretic that blocks epithelial sodium channels in the collecting duct, reducing potassium excretion.
Oral: 25-100 mg once daily; initial dose 25 mg once daily; may increase to 50-100 mg once daily based on response.
1-2 capsules orally once daily; each capsule contains hydrochlorothiazide 25 mg and triamterene 50 mg.
None Documented
None Documented
Clinical Note
moderateChlorthalidone + Digoxin
"The risk or severity of adverse effects can be increased when Chlorthalidone is combined with Digoxin."
Clinical Note
moderateChlorthalidone + Digitoxin
"The risk or severity of adverse effects can be increased when Chlorthalidone is combined with Digitoxin."
Clinical Note
moderateChlorthalidone + Deslanoside
"The risk or severity of adverse effects can be increased when Chlorthalidone is combined with Deslanoside."
Clinical Note
moderateTerminal half-life 40-60 hours (range 35-70h); prolonged in renal impairment
Triamterene: 1.5–2.5 hours; hydrochlorothiazide: 6–15 hours. Clinical dosing typically once daily.
Renal: 50-65% unchanged; biliary/fecal: minimal (<5%)
Renal: triamterene ~80% (as metabolites and parent), hydrochlorothiazide >95% unchanged.
Category C
Category C
Thiazide Diuretic
Thiazide Diuretic
Chlorthalidone + Acetyldigitoxin
"The risk or severity of adverse effects can be increased when Chlorthalidone is combined with Acetyldigitoxin."