Concomitant use w/ cardiac glycosides, benzothiadiazine derivatives, thiazide, vit D analogue or metabolite, anticonvulsants (eg, phenytoin, phenobarb, primidone), rifampicin, INH, orlistat, liqd paraffin, cholestyramine, cytotoxic agent, actinomycin, antifungal imidazole, glucocorticoid, multivit & minerals, Al hydroxides, Mg salts, sucralfate, Ca salts, conivaptan, aripiprazole, axitinib, saxagliptin, bile acid sequestrant, systemic corticosteroid, CYP3A4 inducers, deferasirox, mineral oils, orlistat, sevelamer, tocilizumab, hydantoin, barbiturates.