Nonlinear desipramine pharmacokinetics: a case study.

  • 1 February 1985
    • journal article
    • case report
    • Vol. 5  (1) , 43-5
Abstract
A case of nonlinear desipramine pharmacokinetics is described. During routine clinical monitoring serum desipramine concentrations appeared to change disproportionately with dose. Following a series of controlled dosage decreases, from 400 to 50 mg/day, the patient's steady state serum concentrations fit a nonlinear pharmacokinetic model. This curvilinear serum concentration-dose relationship suggests saturation of hepatic metabolism and signals the need for caution when predicting or titrating doses against serum drug concentrations. The implications of this new finding are discussed.

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