Clinically relevant P450 interactions according to Fockhart et al.[9]
| Drug | CYP2C19 | CYP2C9 | CYP2D6 | CYP3A4 |
|---|---|---|---|---|
| Substrate | ||||
| Amitriptyline | X | X | ||
| Astemizole | X | |||
| Cisapride | X | |||
| Clarithromycin | X | |||
| Clomipramine | X | X | ||
| Erythromycin | X | |||
| Haloperidol | X | X | ||
| Pimozide | X | |||
| Sulfamethoxazole | X | |||
| Tacrolimus | X | |||
| Terfenadine | X | |||
| Thioridazine | X | |||
| Inhibitor | ||||
| Amiodarone | X | X | X | |
| Chlorpheniramine | X | |||
| Cimetidine | X | X | ||
| Clarithromycin | X | |||
| Clomipramine | X | |||
| Diltiazem | X | |||
| Erythromycin | X | |||
| Fluconazole | X | |||
| Fluoxetine | X | X | X | |
| Fluvoxamine | X | X | ||
| Haloperidol | X | |||
| Indinavir | X | |||
| Isoniazid | X | |||
| Itraconazole | X | |||
| Ketoconazole | X | X | ||
| Lansoprazole | X | |||
| Methadone | X | |||
| Mibefradil | X | X | ||
| Nefazodone | X | |||
| Nelfinavir | X | |||
| Omeprazole | X | |||
| Paroxetine | X | |||
| Quinidine | X | |||
| Ritonavir | X | X | ||
| Saquinavir | X | |||
| Ticlopidine | X | X | ||
| Troleandomycin | X | |||
| Verapamil | X | |||