Summary
We have investigated changes in the pharmacokinetics of prednisolone caused by co-administration or discontinuation of rifampin.
Serial IV pharmacokinetic studies of prednisolone (1 mg/kg) in groups of 3 patients over a 1 month period of rifampin co-treatment or after its withdrawal, revealed significant changes in the area under the curve, the total clearance, the non-renal clearance and the half-life. The changes in the pharmacokinetic parameters reached a 1.5 to 2-fold plateau after 2 weeks and the half maximal effect was attained within 5 days. Neither the volume of distribution nor the protein binding of prednisolone were significantly altered.
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Lee, K.H., Shin, J.G., Chong, W.S. et al. Time course of the changes in prednisolone pharmacokinetics after co-administration or discontinuation of rifampin. Eur J Clin Pharmacol 45, 287–289 (1993). https://doi.org/10.1007/BF00315399
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DOI: https://doi.org/10.1007/BF00315399