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. 1983 Feb;23(2):293–299. doi: 10.1128/aac.23.2.293

Pharmacokinetics and tolerance of N-formimidoyl thienamycin (MK0787) in humans.

S R Norrby, K Alestig, F Ferber, J L Huber, K H Jones, F M Kahan, M A Meisinger, J D Rogers
PMCID: PMC186040  PMID: 6573156

Abstract

The pharmacokinetics of intravenously administered N-formimidoyl thienamycin (MK0787) were studied in 14 healthy male subjects in a single-dose study, in which the volunteers received N-formimidoyl thienamycin with and without probenecid, and in a multiple-dose study, in which the subjects were given 250 or 500 mg every 8 h for 10 doses. High dose-related plasma concentrations of N-formimidoyl thienamycin were achieved; co-administration with probenecid resulted in only minor increases in these concentrations. No accumulation in plasma was seen after multiple doses. The plasma half-life of N-formimidoyl thienamycin was slightly less than 1 h and did not increase significantly with the coadministration of probenecid. The urinary recovery of N-formimidoyl thienamycin varied between 6.0 and 38.4% of the dose with a marked intersubject variability. Variations in individual subjects were small, however, when the urinary recoveries after repeated doses were compared. These results were in agreement with previous animal studies showing a renal metabolism of N-formimidoyl thienamycin. Probenecid administration resulted in a marked decrease in N-formimidoyl thienamycin urinary recovery. In vitro experiments showed that the decay of N-formimidoyl thienamycin in spiked pretreatment urine samples was 2 to 5%/h with more rapid degradation at acidic than at basic pH.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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