Rifampicin, der inducerer CYP3A4 metabolisme, reducerede tadalafil AUC med 88% i forhold til AUC- værdierne for tadalafil alene (10 mg).
A CYP3A4 inducer, rifampicin, reduced tadalafil AUC by 88%, relative to the AUC values for tadalafil alone (10 mg).