Comparative Pharmacology
Head-to-head clinical analysis: HYDRALAZINE HYDROCHLORIDE W HYDROCHLOROTHIAZIDE 100 50 versus HYDRODIURIL.
Peer-Reviewed Evidence
Head-to-head clinical analysis: HYDRALAZINE HYDROCHLORIDE W HYDROCHLOROTHIAZIDE 100 50 versus HYDRODIURIL.
HYDRALAZINE HYDROCHLORIDE W/ HYDROCHLOROTHIAZIDE 100/50 vs HYDRODIURIL
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 the distal convoluted tubule of the kidney, increasing excretion of sodium and water, reducing plasma volume and cardiac output.
1 tablet (hydralazine 100 mg / hydrochlorothiazide 50 mg) orally once daily. Maximum: 1 tablet daily. Titrate from lower doses of individual components.
25-100 mg orally once daily. For hypertension: 12.5-25 mg once daily.
None Documented
None Documented
Hydralazine: 2-8 hours (prolonged in renal impairment); Hydrochlorothiazide: 6-15 hours (increased in renal impairment)
Terminal elimination half-life is approximately 5.6–14.8 hours (mean ~10 hours); clinically, duration of diuresis correlates with half-life, allowing once or twice daily dosing.
Hydralazine: 90% renal metabolites, 10% feces; Hydrochlorothiazide: >95% renal (tubular secretion) as unchanged drug
Renal: approximately 95% eliminated unchanged in urine via glomerular filtration and tubular secretion; biliary/fecal: <5%.
Category A/B
Category C
Thiazide Diuretic
Thiazide Diuretic