Comparative Pharmacology
Head-to-head clinical analysis: CAPTOPRIL versus TARKA.
Peer-Reviewed Evidence
Head-to-head clinical analysis: CAPTOPRIL versus TARKA.
CAPTOPRIL vs TARKA
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Competitive inhibitor of angiotensin-converting enzyme (ACE), preventing conversion of angiotensin I to angiotensin II, reducing vasoconstriction and aldosterone secretion.
Combination of trandolapril (angiotensin-converting enzyme inhibitor) and verapamil (calcium channel blocker). Trandolapril inhibits ACE, reducing angiotensin II production, leading to vasodilation and decreased aldosterone secretion. Verapamil blocks L-type calcium channels, causing coronary and peripheral vasodilation, and negative chronotropic/inotropic effects.
Initial: 25 mg PO 2-3 times daily; target dose: 50 mg PO 2-3 times daily; maximum: 450 mg/day. For heart failure: start 6.25-12.5 mg PO 3 times daily, titrate to 25-50 mg PO 3 times daily.
Tarka (trandolapril/verapamil) is available as fixed-dose combinations: 1 mg/180 mg, 2 mg/180 mg, 2 mg/240 mg, 4 mg/240 mg. For hypertension, initial dose is 1 mg/180 mg orally once daily; titrate based on blood pressure response, maximum dose 8 mg/480 mg per day.
None Documented
None Documented
Clinical Note
moderateCaptopril + Benzydamine
"The risk or severity of adverse effects can be increased when Captopril is combined with Benzydamine."
Clinical Note
moderateCaptopril + Estrone sulfate
"The serum concentration of Estrone sulfate can be decreased when it is combined with Captopril."
Clinical Note
moderateCaptopril + Droxicam
"The risk or severity of adverse effects can be increased when Captopril is combined with Droxicam."
Clinical Note
moderateCaptopril + Loxoprofen
Terminal half-life 1.9 hours, prolonged to 3.5-32 hours in renal impairment; clinical context: requires adjusted dosing in renal failure
Trandolaprilat terminal t1/2 16–24 h (prolonged in renal impairment, e.g., CrCl <30 mL/min ~36 h); verapamil t1/2 6–12 h (active metabolite norverapamil t1/2 ~12 h)
Primarily renal (50-60% unchanged), with minor biliary/fecal elimination (<5%)
Renal: trandolaprilat 33% (unchanged 13%), trandolapril 10%; fecal: 66% (trandolaprilat 21%, trandolapril 33%); verapamil: renal 70% (16% unchanged), fecal 16%
Category D/X
Category C
ACE Inhibitor
ACE Inhibitor + Calcium Channel Blocker
"The risk or severity of adverse effects can be increased when Captopril is combined with Loxoprofen."