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  • Title: Absorption and elimination of D-propoxyphene, acetyl salicylic acid, and phenazone in a combination tablet (Doleron): comparison between young and elderly subjects.
    Author: Melander A, Bodin NO, Danielson K, Gustafsson B, Haglund G, Westerlund D.
    Journal: Acta Med Scand; 1978; 203(1-2):121-4. PubMed ID: 626106.
    Abstract:
    The single-dose kinetics of D-propoxyphene, acetyl salicylic acid and phenazone, given in a combination tablet (Doleron), were compared in young and elderly subjects. Serial blood samples were taken 0--48 hours after administration. The plasma concentrations of propoxyphene and of its major metabolite, norporpoxyphene, were assessed by mass fragmentography, those of phenazone by gas chromatography, and those of acetyl salicylic acid plus salicylic acid by spectrofluorometry. Neither for propoxyphene, norpropoxyphene, acetyl salicylic acid nor phenazone did the areas under the concentration curves or the elimination half-lives differ between young and elderly subjects. These data do not provide pharmacokinetic support for a general reduction of the Doleron dosage in elderly subjects.
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