期刊
JOURNAL OF CLINICAL PHARMACOLOGY
卷 40, 期 8, 页码 844-853出版社
SAGE PUBLICATIONS INC
DOI: 10.1177/00912700022009576
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lCarvedilol is a relatively new drug with beta- and alpha(1)-receptor blocking activity and antioxidant effects recently approved for the treatment of congestive heart failure (CE-IF). An ascending, multiple-dose study was completed in 20 male patients with stable New York Heart Association (NYHA) Class III or IV CHF: The pharmacokinetics of carvedilol, S(-)-carvedilol, R(+)-carvedilol, and the active metabolites of carvedilol was assessed at steady state after twice-daily oral administration of carvedilol for 7 days at 6.25, 12.5 25, and 50 mg doses. Carvedilol exhibited stereoselective pharmacokinetics in CHF patients with dose-proportional increases in steady-state plasma concentrations of carvedilol and its enantiomers. Mean AUC and C-max values for carvedilol were up to twofold higher in patients with Class IV CHF as compared to those with Class III CHF. Steady-state plasma concentrations of the active metabolites also increased in a dose-proportional manner and were typically 10% or less of that observed for carvedilol. In general, carvedilol was adequately tolerated by adult male CHF patients at the dose levels (6.25-50 mg) evaluated in this study as adverse events were consistent with those frequently observed in patients with CHF. (C) 2000 the American College of Clinical Pharmacology.
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