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  • 1
    ISSN: 1432-1041
    Keywords: mecillinam ; bacmecillinam ; pivmecillinam ; pharmacokinetics ; pro-drug ; healthy volunteers ; bioavailability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The pharmacokinetics of bacmecillinam and pivmecillinam were studied in healthy fasting volunteers given tablets in a cross-over, randomized order. The mean (±SD) peak levels of plasma mecillinam were 1.43±0.34, 2.73±0.43, and 4.62±1.41 mg/l after bacmecillinam 100, 200, and 400 mg and 2.38±0.65 mg/l after pivmecillinam 400 mg. The corresponding areas under plasma Vs time curves (AUC) were 2.21±0.19, 3.99±0.63, and 7.74±1.38 mg·h·l−1 for bacmecillinam and 5.35±0.93 mg·h·l−1 for pivmecillinam. The elimination half-lives were 0.8–1.1h for bacmecillinam and 0.7h for pivmecillinam. The 12 h urinary recovery of unchanged mecillinam after the 400 mg doses was 41% for bacmecillinam and 30% for pivmecillinam. The 400 mg dose of bacmecillinam gave a significantly higher plasma peak (p〈0.001), AUC (p〈0.001) and urinary recovery (p〈0.001) than did pivmecillinam 400 mg. The plasma peaks appeared earlier and the rate of absorption was higher after bacmecillinam than after pivmecillinam (p〈0.05). In conclusion, bacmecillinam had a better bioavailability than pivmecillinam in the tablet formulations studied. The AUC increased linearly with increasing doses of bacmecillinam.
    Type of Medium: Electronic Resource
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