एफाविरेंज़ और पोसाकोनाज़ोल का इंटरैक्शन

Prevention or Management Efavirenz Avoid concomitant use of posaconazole with efavirenz, unless the benefit outweighs the risks.

Anti-HIV Drugs that are CYP3A4 Substrates Mechanism and Clinical Effect(s) Ritonavir and atazanavir are CYP3A4 substrates and posaconazole increased plasma concentrations of these drugs [see Clinical Pharmacology (12.3) ].

Interaction Drug Interaction Rifabutin, phenytoin, efavirenz, cimetidine, esomeprazole The drug interactions with esomeprazole and metoclopramide do not apply to Noxafil tablets or Noxafil PowderMix ( 7.3 , 12.3 ).

Effects of Noxafil and Noxafil PowderMix on Other Drugs Posaconazole is a strong CYP3A4 inhibitor.

Antifungals: Voriconazole Itraconazole Ketoconazole Posaconazole ↓ voriconazole * ↑ efavirenz * ↓ itraconazole * ↓ hydroxyitraconazole * ↓ ketoconazole ↓ posaconazole * Efavirenz and voriconazole should not be coadministered at standard doses.

QT Prolonging Drugs There is limited information available on the potential for a pharmacodynamic interaction between efavirenz and drugs that prolong the QTc interval.

Consider alternative antifungal treatment because no dose recommendation for itraconazole can be made.

Consider alternative antifungal treatment because no dose recommendation for ketoconazole can be made.