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  • Title: Single- and multiple-dose pharmacokinetics of etoricoxib, a selective inhibitor of cyclooxygenase-2, in man.
    Author: Agrawal NG, Porras AG, Matthews CZ, Rose MJ, Woolf EJ, Musser BJ, Dynder AL, Mazina KE, Lasseter KC, Hunt TL, Schwartz JI, McCrea JB, Gottesdiener KM.
    Journal: J Clin Pharmacol; 2003 Mar; 43(3):268-76. PubMed ID: 12638395.
    Abstract:
    The single- and multiple-dose pharmacokinetics of etoricoxib, a selective inhibitor of cyclooxygenase-2, were examined in two clinical studies. Single-dose pharmacokinetics--including dose proportionality, absolute bioavailability of the highest dose-strength (120-mg) tablet, and the effect of a high-fat meal on the bioavailability of that tablet--were investigated in a two-part, open, balanced crossover study in two panels of healthy subjects (12 per panel). Steady-state pharmacokinetics were investigated in an open-label study in which 24 healthy subjects were administered 120-mg single and multiple (once daily for 10 days) oral doses of etoricoxib tablets. The pharmacokinetics of etoricoxib were found to be consistent with linearity through doses at least twofold greater than the highest anticipated clinical dose of 120 mg. Etoricoxib administered as a tablet was rapidly and completely absorbed and available; the absolute bioavailability was estimated to be 100%. A high-fat meal decreased the rate of absorption without affecting the extent of absorption of etoricoxib; therefore, etoricoxib can be dosed irrespective of food. Steady-state pharmacokinetics of etoricoxib, achieved following 7 days of once-daily dosing, were found to be reasonably predicted from single doses. The accumulation ratio averaged 2.1, and the corresponding accumulation t1/2 averaged 22 hours, supporting once-daily dosing. Etoricoxib was generally well tolerated.
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