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Pharmacokinetics of prednisolone after high doses of prednisolone hemisuccinate

✍ Scribed by H. Derendorf; P. Rohdewald; H. Möllmann; J. Rehder; J. Barth; D. Neveling

Publisher
John Wiley and Sons
Year
1985
Tongue
English
Weight
437 KB
Volume
6
Category
Article
ISSN
0142-2782

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✦ Synopsis

Prednisolone in the form of its hemisuccinate was given intravenously in two different doses (1200 mg and 75 mg). Plasma levels of the ester and prednisolone were measured and pharmacokinetic parameters were calculated. The results indicate a dose-dependency in the pharmacokinetics of both hemisuccinate and the free alcohol. For the high dose 8 per cent of the administered ester was found unchanged in the urine indicating incomplete conversion of the pro-drug. Comparison with previous studies leads to the conclusion that prednisolone shows doubled non-linear pharmacokinetics with higher total body clearance in the medium dose range than in the low and high dose range. Volume of distribution changes accordingly, but overall elimination rate remains remarkably constant. Saliva levels of prednisolone were low and agree reasonably well with calculated plasma concentrations of free, non-proteinbound prednisolone. No prednisolone hemisuccinate was found in saliva.

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