Comparative Pharmacology
Head-to-head clinical analysis: HYDRALAZINE HYDROCHLORIDE W HYDROCHLOROTHIAZIDE 100 50 versus TRICHLORMETHIAZIDE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: HYDRALAZINE HYDROCHLORIDE W HYDROCHLOROTHIAZIDE 100 50 versus TRICHLORMETHIAZIDE.
HYDRALAZINE HYDROCHLORIDE W/ HYDROCHLOROTHIAZIDE 100/50 vs TRICHLORMETHIAZIDE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Hydralazine: Direct vasodilation of arterioles via unknown mechanism, possibly involving nitric oxide. Hydrochlorothiazide: Thiazide diuretic that inhibits the Na+/Cl- cotransporter in the distal convoluted tubule, increasing excretion of sodium and water.
Inhibits sodium-chloride symporter in distal convoluted tubule, increasing excretion of sodium, chloride, and water.
1 tablet (hydralazine 100 mg / hydrochlorothiazide 50 mg) orally once daily. Maximum: 1 tablet daily. Titrate from lower doses of individual components.
2-4 mg orally once daily; maximum 4 mg/day.
None Documented
None Documented
Hydralazine: 2-8 hours (prolonged in renal impairment); Hydrochlorothiazide: 6-15 hours (increased in renal impairment)
Clinical Note
moderateTrichlormethiazide + Digoxin
"The risk or severity of adverse effects can be increased when Trichlormethiazide is combined with Digoxin."
Clinical Note
moderateTrichlormethiazide + Digitoxin
"The risk or severity of adverse effects can be increased when Trichlormethiazide is combined with Digitoxin."
Clinical Note
moderateTrichlormethiazide + Deslanoside
"The risk or severity of adverse effects can be increased when Trichlormethiazide is combined with Deslanoside."
Clinical Note
moderateTerminal elimination half-life is approximately 2-6 hours (average 3.5 h); clinical context: short half-life necessitates once or twice daily dosing for sustained diuresis.
Hydralazine: 90% renal metabolites, 10% feces; Hydrochlorothiazide: >95% renal (tubular secretion) as unchanged drug
Primarily renal (tubular secretion); ~70% excreted unchanged in urine; minor biliary/fecal (<10% total).
Category A/B
Category C
Thiazide Diuretic
Thiazide Diuretic
Trichlormethiazide + Acetyldigitoxin
"The risk or severity of adverse effects can be increased when Trichlormethiazide is combined with Acetyldigitoxin."