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. 2018 Oct 31;7(12):829–837. doi: 10.1002/psp4.12360

Table 2.

Parameters specific to the CYP enzymes and probe substrates

CYP kdeg Substrate fmCYP
CYP2D6 Not applicable Dextromethorphan 0.72
CYP2B6 0.000362 min−1 = 0.0217 h−1 Bupropion 0.90
CYP3A4 0.000322 min−1 = 0.0193 h−1 Midazolam 0.96

CYP, cytochrome P450 enzyme; fmCYP, fraction of substrate metabolized by CYP; kdeg, first order degradation rate constant.