Comparative Pharmacology
Head-to-head clinical analysis: AMLODIPINE BESYLATE VALSARTAN AND HYDROCHLOROTHIAZIDE versus TEVETEN HCT.
Peer-Reviewed Evidence
Head-to-head clinical analysis: AMLODIPINE BESYLATE VALSARTAN AND HYDROCHLOROTHIAZIDE versus TEVETEN HCT.
AMLODIPINE BESYLATE, VALSARTAN AND HYDROCHLOROTHIAZIDE vs TEVETEN HCT
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Amlodipine is a dihydropyridine calcium channel blocker that inhibits calcium ion influx across cardiac and vascular smooth muscle cells, causing vasodilation and reduced peripheral resistance. Valsartan is an angiotensin II receptor blocker (ARB) that selectively blocks AT1 receptors, inhibiting vasoconstriction and aldosterone release. Hydrochlorothiazide is a thiazide diuretic that inhibits the Na+/Cl- symporter in the distal convoluted tubule, increasing sodium and water excretion.
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.
One tablet orally once daily. Available strengths: amlodipine 5 mg/valsartan 160 mg/HCTZ 12.5 mg, amlodipine 5 mg/valsartan 160 mg/HCTZ 25 mg, amlodipine 10 mg/valsartan 160 mg/HCTZ 12.5 mg, amlodipine 10 mg/valsartan 160 mg/HCTZ 25 mg, amlodipine 10 mg/valsartan 320 mg/HCTZ 25 mg. Titrate based on response, max dose: amlodipine 10 mg/valsartan 320 mg/HCTZ 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
Amlodipine: 30-50 hours (terminal, allows once-daily dosing); Valsartan: 6 hours; Hydrochlorothiazide: 6-15 hours (prolonged in renal impairment).
Eprosartan: 5-9 hours; Hydrochlorothiazide: 6-15 hours; allows once-daily dosing.
Amlodipine: 60% renal, 20-25% biliary/fecal; Valsartan: 83% fecal via bile, 13% renal; Hydrochlorothiazide: ≥95% renal 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