PMID: 590314Dec 2, 1977

Influence of nutritional status on plasma levels and relative bioavailability of tetracycline

European Journal of Clinical Pharmacology
T C Raghuram, K Krishnaswamy

Abstract

Relative bioavailability after oral administration of a single dose and Cmin levels of tetracycline in plasma after multiple doses were determined in groups of well-nourished and under-nourished subjects. The relative bioavailability of tetracycline, assessed by the area under serum concentration time-curves, did not differ in under-nourished and well-nourished patients. The plasma levels were not different in the two groups after the conventional dose of tetracycline HCL 250 mg at 6 hour intervals. However, in these studies under-nourished subjects received a higher dose per kg body weight, which could have compensated for any effect of a shortened half life of the drug. When the dose per kg body weight was reduced, the Cmin levels were lower. On the other hand, with the same dose per kg body weight at more frequent intervals, the plasma concentrations were similar to those in well-nourished subjects. These studies indicate that the dosage regimen should be based both on body weight and on the nutritional status of the individual.

References

May 3, 1976·JAMA : the Journal of the American Medical Association·M Gibaldi, G Levy
Jan 1, 1975·Drugs·A P BallJ M Murdoch
Jan 16, 1976·Clinica Chimica Acta; International Journal of Clinical Chemistry·R A Shastri, K Krishnaswamy
Aug 3, 1972·The New England Journal of Medicine·J Koch-Weser
Apr 1, 1971·Journal of Pharmaceutical Sciences·M Gibaldi, H Weintraub
Jul 20, 1970·JAMA : the Journal of the American Medical Association·S RiegelmanW L Epstein

Citations

Mar 1, 1982·Clinical and Experimental Pharmacology & Physiology·T C RaghuramK V Rao
Dec 1, 1982·British Journal of Clinical Pharmacology·T C Raghuram, K Krishnaswamy
Sep 1, 1983·Journal of the American Geriatrics Society·P P Lamy

Related Concepts

Half-Life
Malnutrition
Topicycline

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