التداخل بين كلاريثرومايسين وإيفافيرينز

Miscellaneous Cytochrome P450 Inducers: Efavirenz Nevirapine Rifampicin Rifabutin Rifapentine Use With Caution Inducers of CYP3A enzymes, such as efavirenz, nevirapine, rifampicin, rifabutin, and rifapentine will increase the metabolism of clarithromycin, thus decreasing plasma concentrations of clarithromycin, while increasing those of 14-OH-clarithromycin.

Alternative antibacterial treatment should be considered when treating patients receiving inducers of CYP3A.

Clarithromycin and other macrolides are known to inhibit CYP3A and Pgp.

Clarithromycin and other macrolides are known to inhibit CYP3A.

Since the microbiological activities of clarithromycin and 14-OH-clarithromycin are different for different bacteria, the intended therapeutic effect could be impaired during concomitant administration of clarithromycin and enzyme inducers.

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

Anti-infective: Clarithromycin ↓ clarithromycin * ↑ 14-OH metabolite * Consider alternatives to macrolide antibiotics because of the risk of QT interval prolongation.