Comparative Pharmacology
Head-to-head clinical analysis: IRBESARTAN AND HYDROCHLOROTHIAZIDE versus TEVETEN HCT.
Peer-Reviewed Evidence
Head-to-head clinical analysis: IRBESARTAN AND HYDROCHLOROTHIAZIDE versus TEVETEN HCT.
IRBESARTAN AND HYDROCHLOROTHIAZIDE vs TEVETEN HCT
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Irbesartan is an angiotensin II receptor antagonist that selectively blocks the binding of angiotensin II to AT1 receptors, inhibiting vasoconstriction and aldosterone secretion. Hydrochlorothiazide is a thiazide diuretic that inhibits the sodium-chloride symporter in the distal convoluted tubule, increasing excretion of sodium and water.
TEVETEN HCT combines eprosartan mesylate, an angiotensin II receptor antagonist, and hydrochlorothiazide, a thiazide diuretic. Eprosartan blocks the vasoconstrictor and aldosterone-secreting effects of angiotensin II by selectively antagonizing the AT1 receptor. Hydrochlorothiazide inhibits the sodium-chloride symporter in the distal convoluted tubule, increasing excretion of sodium, chloride, and water, thereby reducing plasma volume.
Oral: 1 tablet (irbesartan 150 mg / hydrochlorothiazide 12.5 mg or irbesartan 300 mg / hydrochlorothiazide 12.5 mg or irbesartan 300 mg / hydrochlorothiazide 25 mg) once daily, with or without food. Maximum: irbesartan 300 mg/hydrochlorothiazide 25 mg daily.
One tablet orally once daily, containing eprosartan 600 mg and hydrochlorothiazide 12.5 mg or 25 mg, with or without food. Maximum dose: eprosartan 600 mg/hydrochlorothiazide 25 mg per day.
None Documented
None Documented
Irbesartan: 11-15 hours; Hydrochlorothiazide: 6-15 hours. Steady state achieved in 3-5 days.
Eprosartan: 5-9 hours; Hydrochlorothiazide: 6-15 hours; allows once-daily dosing.
Irbesartan: primarily biliary (80%) and renal (20%); Hydrochlorothiazide: renal (≥95% as unchanged drug).
Eprosartan: renal (70% unchanged, 10% as metabolite), biliary/fecal (20%); Hydrochlorothiazide: renal (≥95% unchanged).
Category D/X
Category C
ARB
ARB + Thiazide Diuretic Combination