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Table 2 Strong inducers or inhibitors of CYP (cytochrome P450) enzymes[19]

From: A single-blinded, single-centre, controlled study in healthy adult smokers to identify the effects of a reduced toxicant prototype cigarette on biomarkers of exposure and of biological effect versus commercial cigarettes

INHIBITORS

1A2

2B6

2C8

2C19

Cimetidine

Thiotepa

Gemfibrozil

Fluoxetine

Fluoroquinolones

Ticlopidine

Montelukast

Fluvoxamine

Fluvoxamine

  

Ketoconazole

Ticlopidine

  

Lansoprazole

   

Omeprazole

   

Ticlopidine

INHIBITORS

2C9

2D6

2E1

3A4,5,7

Amiodarone

Amiodarone

Disulfiram

HIV antivirals:

Fluconazole

Bupropion

 

Indinavir

Isoniazid

Chlorpheniramine

 

Nelfinavir

 

Cimetidine

 

Ritonavir

 

Clomipramine

 

Amiodarone

 

Duloxetine

 

NOT azithromycin

 

Fluoxetine

 

Cimetidine

 

Haloperidol

 

Clarithromycin

 

Methadone

 

Diltiazem

 

Mibefradil

 

Erythromycin

 

Paroxetine

 

Fluvoxamine

 

Quinidine

 

Itraconazole

 

Ritonavir

 

Ketoconazole

 

Doxepin

 

Mibefradil

   

Nefazodone

   

Troleandomycin

   

Verapamil

INDUCERS

1A2

2B6

2C8

2C19

N/A

Phenobarbital

N/A

N/A

 

Phenytoin

  
 

Rifampin

  

2C9

2D6

2E1

3A4,5,7

Rifampin

N/A

Isoniazid

Carbamazepine

Secobarbital

  

Phenobarbital

   

Phenytoin

   

Pioglitazone

   

Rifabutin

   

Rifampin

   

St John’s wort

   

Troglitazone

  1. (Adapted with permission from Version 5.0 (http://medicine.iupui.edu/clinpharm/ddis/table.aspx)).
  2. 1A2, 2B6 etc = CYP enzyme subtypes.