Beschreibung
Fluconazole inhibits hydroxychloroquine metabolism and both drugs prolong the QT interval, creating compounded arrhythmia risk.
Mechanismus
Fluconazole inhibits CYP2D6 and CYP3A4 pathways involved in hydroxychloroquine metabolism; both drugs independently block hERG channels.
Klinische Bedeutung
Increased hydroxychloroquine plasma levels combined with additive hERG blockade significantly elevates torsades de pointes risk.
Maßnahmen
Avoid combination; use antifungal agents with minimal CYP inhibitory effect or alternative antimalarial/rheumatologic therapy.
Medizinischer Haftungsausschluss
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