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DƯỢC LÍ Goodman & Gilman's The Pharmacological Basis of Therapeutics 12th, 2010

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Table 57-3

Interaction of Azole Antifungal Agents with Hepatic CYPs

FLUCONAZOLE VORICONAZOLE ITRACONAZOLE POSACONAZOLE

CYP3A4 inhibitor CYP2C9 inhibitor and substrate CYP3A4 inhibitor CYP3A4 inhibitor

CYP2C9 inhibitor

CYP3A4 inhibitor

CYP2C19 inhibitor CYP2C19 inhibitor

Table 57-4

Drugs Exhibiting Elevated Plasma Concentrations When Co-Administered with Azole Anti-Fungal Agents

Alfentanil

Alprazolam

Astemizole

Buspirone

Busulfan

Carbamazepine

Cisapride

Cyclosporine

Digoxin

Docetaxel

Dofetilide

Efavirenz

Eletriptan

Eplerenone

Ergot alkaloids

Erlotinib

Eszopiclone

Felodipine

Fexofenadine

Gefitinib

Glimepiride

Glipizide

Halofantrine

Haloperidol

Imatinib

Irinotecan

Losartan

Lovastatin

Methadone

Methylprednisolone

Midazolam

Nevirapine

Omeprazole

Phenytoin

Pimozide

Quinidine

Ramelteon

Ranolazine

Risperidone

Saquinavir

Sildenafil

Sirolimus

Solifenacin

Sunitinib

Tacrolimus

Triazolam

Vardenafil

Vinca alkaloids

Warfarin

Zidovudine

Zolpidem

Mechanism of interaction presumably occurs largely at the level of hepatic CYPs, especially CYPs 3A4, 2C9, and 2D6, but can also involve

P-glycoprotein and other mechanisms. Not all drugs listed interact equally with all azoles. For details, see Chapter 6 and Zonios (2008).

Table 57-5

Some Drugs that Decrease Azole Concentration When Co-Administered

DRUG FLUCONAZOLE VORICONAZOLE ITRACONAZOLE POSACONAZOLE

Antacids (simultaneous)

Barbiturates a

Carbamazepine

H 2

antagonists

Didanosine

Efavirenz

Nevirapine

Proton pump inhibitors b

Phenytoin

Rifampin

Rifabutin

Ritonavir

a

Phenobarbital only. b Omeprazole and voriconazole increase each other’s concentrations in plasma; reduce omeprazole dose by 50% when initiating

voriconazole therapy. For additional information, see Zonios, 2008.

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