Comparative Pharmacology
Head-to-head clinical analysis: EDARBYCLOR versus HYDROPRES 50.
Peer-Reviewed Evidence
Head-to-head clinical analysis: EDARBYCLOR versus HYDROPRES 50.
EDARBYCLOR vs HYDROPRES 50
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
EDARBYCLOR is a fixed-dose combination of azilsartan medoxomil, an angiotensin II receptor blocker (ARB), and chlorthalidone, a thiazide-like diuretic. Azilsartan selectively blocks AT1 receptors, reducing angiotensin II-mediated vasoconstriction, aldosterone secretion, and renal sodium reabsorption. Chlorthalidone inhibits sodium-chloride cotransport in the distal convoluted tubule, increasing excretion of sodium, chloride, and water, thereby reducing plasma volume.
Hydrochlorothiazide is a thiazide diuretic that inhibits the sodium-chloride cotransporter in the distal convoluted tubule, increasing excretion of sodium, chloride, and water. Reserpine is a rauwolfia alkaloid that depletes catecholamines and serotonin from central and peripheral nerve endings, reducing sympathetic outflow and lowering blood pressure. The combination provides additive antihypertensive effect.
One tablet (azilsartan medoxomil 40 mg / chlorthalidone 12.5 mg or 40 mg / 25 mg) orally once daily.
HYDROPRES 50 is a fixed-dose combination of hydrochlorothiazide 50 mg and reserpine 0.125 mg. Usual adult dose: one tablet orally once daily.
None Documented
None Documented
Terminal elimination half-life is approximately 11-12 hours for azilsartan medoxomil; clinical consequence: supports once-daily dosing for 24-hour blood pressure control
Hydrochlorothiazide: 6-15 hr (terminal); Reserpine: 50-100 hr (terminal, biphasic). Clinical: HCTZ half-life prolonged in renal impairment; reserpine accumulates with repetitive dosing.
Renal (approximately 60% as unchanged drug and metabolites), biliary/fecal (approximately 40%)
Hydrochlorothiazide: 95% renal (65% unchanged); Reserpine: 30% renal, 60% fecal
Category C
Category C
Angiotensin II Receptor Blocker/Thiazide Diuretic Combination
Thiazide Diuretic Combination