Table 1.: Medications that alters the plasma glucocorticoid levels.

Medications that Alter the Plasma Glucocorticoid Levels
 Inducers of Cytochrome P450: Decreases GC Level
  1. Antiepileptics : Barbiturate, Carbamazepine, Phenytoin
  2. Bile acid sequestrants
  3. Antibiotics : Rifampicin
Inhibitors of Cytochrome P450: Increases GC Level
 1. Inhibitors of cytochrome P450 dependent CYP 3A4 inhibitors
  1. Antibiotics : Macrolide, Clarithromycin
  2. Anti fungal : Fluconazole, Itraconazole, Ketoconazole, Voriconazole
  3. Anti arrhythmic : Amiodarone, Lidocaine
  4. Calcium channel blockers: Diltiazem, Verapamil
  5. HIV drugs : Ritonavir, Indinavir
  6. HMG CoA reductase inhibitors: Atorvastatin
 2. Inhibitors of cytochrome P450 dependent CYP 2D6
  1. Antipsychotics/Antidepressents:Amitryptiline, Haloperidol, Resperidone, Clozapine, Fluoxetine.
  2. Cardiac drugs: Flecainide, Propafenone, Carvedilol, Metoprolol