TABLE 4

Relative P450 contribution (fm) to the hepatic metabolism, ketoconazole dose, and estimated Cmax


Compound

fm

Ketoconazole Dosea

Cmax b
CYP1A2
CYP2C9
CYP2C19
CYP2D6
CYP3A4/5
mg μM
Theophylline 1 NA NA NA NA 200 b.i.d. 10
Desipramine NA NA NA 1 NA 200 q.d. 10
Midazolam NA NA NA NA 0.94 400 q.d. 20
Tolbutamide NA 0.72 0.28 NA NA 200 q.d. 10
Omeprazole NA NA 0.60 NA 0.40 50–200 q.d. 2.5–10
Loratadine NA NA NA NA 0.60 200 b.i.d. 10
Cyclosporine NA NA NA NA 0.71 200 q.d. 10
Alprazolam NA NA NA NA 0.80 200 b.i.d. 10
Budesonide 0.08 0.02 0 0 0.79 200 q.d. 10
Buprenorphine 0.07 0.10 0 0.01 0.77 200 b.i.d. 10
Docetaxel 0.12 0 0 0.18 0.70 200 q.d. 10
Loratadine 0.16 0.18 0 0.24 0.41 200 b.i.d. 10
Methylprednisolone 0 0 0.10 0.31 0.59 200 q.d. 10
Sirolimus 0 0.15 0 0 0.85 NA 10
Tacrolimus
0
0.08
0
0.01
0.47
400 q.d.
20
  • NA, no information available

  • a For reference, see Table 5

  • b Assuming linear pharmacokinetics