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HPLC Determination and Pharmacokinetic Profile of Warfarin in Korean Subjects  

Bae, Jung-Woo (Lab. of Pharmacology, College of Pharmacy, Sungkyunkwan University)
Kim, Hyun-Kyung (Lab. of Pharmacology, College of Pharmacy, Sungkyunkwan University)
Yang, Sang-In (Lab. of Pharmacology, College of Pharmacy, Sungkyunkwan University)
Kim, Ji-Hong (Lab. of Pharmacology, College of Pharmacy, Sungkyunkwan University)
Kim, Kyung-Hye (Lab. of Pharmacology, College of Pharmacy, Sungkyunkwan University)
Jang, Choon-Gon (Lab. of Pharmacology, College of Pharmacy, Sungkyunkwan University)
Park, Young-Seo (Department of Pediatrics , University of Ulsan College of Medicine, Asan Medical Center)
Sohn, Uy-Dong (College of Pharmacy, Chung-Ang University)
Publication Information
YAKHAK HOEJI / v.49, no.2, 2005 , pp. 134-139 More about this Journal
Abstract
Warfarin is a widely used oral anticoagulant agent used to treat thromboembolic disease. The purpose of this study was to develop the efficient assay method of warfarin sodium i n human plasma and to assess the pharmacokinetic profile of the warfarin in healthy Korean volunteers. The pharmacokinetics of warfarin administered orally was evaluated after a dose of 10 mg. Warfarin in plasma was assayed using a specific HPLC method with UV absorbance at 304 nm. AUC was 46.33${\pm}9.95{\mu}g/ml.hr$, $C_{max}$ $1.22{\pm}0.22{\mu}g/ml, $T_{max}$$2.50{\pm}1.41$ hr and half-life $43.49{\pm}4.33$ hr. $T_{max}$ was slightly shorter than that in Caucasian (3~9 hr), whereas the half-life was longer than that in Caucasian (10~45 hr, mean: 36 hr). These results suggest that warfarin may have a longer duration in Korean than in Caucasian.
Keywords
warfarin sodium; coumadin tablets; HPLC;
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