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  • Title: Pharmacokinetics of five cephalosporins in healthy male volunteers.
    Author: Paradelis AG, Stathopoulos G, Trianthaphyllidis C, Logaras G.
    Journal: Arzneimittelforschung; 1977; 27(11):2167-70. PubMed ID: 580023.
    Abstract:
    This paper deals with data on the pharmacokinetics of cephazolin, cephalothin, cephapirin, cephaloridine and cephradine after i.m. injection of a single dose of 0.5 g in healthy male volunteers. Peak serum concentrations occurred 45 min after the administration and were 31.52 microgram/ml for cephazolin, 17.32 microgram/ml for cephaloridine, 13.98 microgram/ml for cephapirin, 9.51 microgram/ml for cephradine and 8.60 microgram/ml for cephalothin. The average half-lives were found to be 2.07, 1.80, 0.98, 1.24 and 0.97 h, respectively. The percentage of protein binding was found to be 82 for cephazolin, 59 for cephalothin, 51 for cephapirin, 31 for cephaloridine and only 10 for cephradine, half an hour after drug administration. The total urine recovery of the above cephalosporins, within 24 h, was 91.9% for cephradine, 81.9% for cephaloridine, 73.3% for cephazolin, 69.5% for cephapirin and 51.2% for cephalothin.
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