Comparative Pharmacology
Head-to-head clinical analysis: DYAZIDE versus HYDROCHLOROTHIAZIDE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: DYAZIDE versus HYDROCHLOROTHIAZIDE.
DYAZIDE vs HYDROCHLOROTHIAZIDE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
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.
Thiazide diuretic that inhibits the sodium-chloride symporter (NCC) in the distal convoluted tubule of the kidney, reducing reabsorption of sodium and chloride, leading to increased excretion of water and electrolytes.
1-2 capsules orally once daily; each capsule contains hydrochlorothiazide 25 mg and triamterene 50 mg.
Oral: 25-100 mg daily in 1-2 divided doses. Maximum dose 200 mg/day.
None Documented
None Documented
Clinical Note
moderateHydrochlorothiazide + Digoxin
"The risk or severity of adverse effects can be increased when Hydrochlorothiazide is combined with Digoxin."
Clinical Note
moderateHydrochlorothiazide + Digitoxin
"The risk or severity of adverse effects can be increased when Hydrochlorothiazide is combined with Digitoxin."
Clinical Note
moderateHydrochlorothiazide + Deslanoside
"The risk or severity of adverse effects can be increased when Hydrochlorothiazide is combined with Deslanoside."
Clinical Note
moderateTriamterene: 1.5–2.5 hours; hydrochlorothiazide: 6–15 hours. Clinical dosing typically once daily.
Terminal elimination half-life is 5.6–14.8 hours (mean ~9 hours). In patients with renal impairment (CrCl <30 mL/min), half-life is prolonged up to 24–48 hours, necessitating dose adjustment.
Renal: triamterene ~80% (as metabolites and parent), hydrochlorothiazide >95% unchanged.
Primarily renal (≥95%) via glomerular filtration and tubular secretion, with approximately 60% of the dose excreted unchanged in urine. Minor biliary/fecal excretion accounts for <5%.
Category C
Category A/B
Thiazide Diuretic
Thiazide Diuretic
Hydrochlorothiazide + Acetyldigitoxin
"The risk or severity of adverse effects can be increased when Hydrochlorothiazide is combined with Acetyldigitoxin."