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Basic Pharmacokinetics of Bisoprolol, a New Highly Beta 1 ‐selective Adrenoceptor Antagonist
Author(s) -
Leopold Götz,
Pabst Joachim,
Ungethüm Wolfram,
Bühring KarlUlrich
Publication year - 1986
Publication title -
the journal of clinical pharmacology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 116
eISSN - 1552-4604
pISSN - 0091-2700
DOI - 10.1002/j.1552-4604.1986.tb02959.x
Subject(s) - bisoprolol , pharmacokinetics , bioavailability , pharmacology , volume of distribution , oral administration , medicine , absorption (acoustics) , enteral administration , concomitant , blood pressure , parenteral nutrition , physics , acoustics
The basic pharmacokinetics of bisoprolol were investigated in three independent studies involving 23 healthy volunteers. After administering 20 mg of 14 C‐bisoprolol orally, mean elimination half‐lives of 11 hours for the unchanged drug and 12 hours for total radioactivity were observed. The enteral absorption of bisoprolol was nearly complete. Fifty percent of the dose was eliminated renally as unchanged bisoprolol and the other 50% metabolically, with subsequent renal excretion of the metabolites. Less than 2% of the dose was recovered from the feces. Intraindividual comparison of the pharmacokinetic data measured after oral and intravenous administration of 10 mg bisoprolol to 12 subjects yielded an absolute bioavailability of 90%. Total and renal clearance were calculated as 15.6 L/hr and 9.6 L/hr, respectively. The volume of distribution was 226 L. Concomitant food intake did not influence the bioavailability of bisoprolol.