Increased C
max & AUC w/ strong CYP3A inhibitors (eg, ketoconazole, conivaptan, clarithromycin, indinavir, itraconazole, ritonavir, telaprevir, posaconazole, voriconazole). Decreased C
max & AUC w/ strong CYP3A inducers (eg, phenytoin, rifampin, carbamazepine). Decreased total AUC w/ moderate CYP3A inducer (eg, efavirenz). Unpredictably decreased plasma conc w/ St. John's wort. Decreased AUC w/ antacids (eg, Ca carbonate), PPI (eg, omeprazole); take Calquence 2 hr before taking H
2-receptor antagonists (eg, ranitidine or famotidine). May increase exposure w/ BCRP substrates (eg, MTX) & MATE1 substrates (eg, metformin).