This is an open-label, randomized, two-way crossover study to evaluate the steady-state effect of fesoterodine (8 mg QD) on the pharmacodynamics and pharmacokinetics of a single supratherapeutic dose of warfarin (25 mg) in healthy subjects.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
14
Single Dose Warfarin 25 mg on Day 1
Fesoterodine 8 mg ER tablets QD for 9 Days and Single Dose Warfarin 25 mg on Day 3
Pfizer Investigational Site
New Haven, Connecticut, United States
Cmax and AUCinf for both S- and R-warfarin
Time frame: 8 days per period
AUC_INR and INRmax
Time frame: 8 days per period
AUClast, Tmax and t½ for both S- and R-warfarin
Time frame: 8 days per period
AUC_PT and PTmax
Time frame: 8 days per period
Safety will be assessed by subjective symptoms/objective findings including physical examinations, clinical safety laboratory assessments, 12-lead ECGs, vital sign measurements and adverse event monitoring.
Time frame: 8 days per period
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