Increased cardiac depressant effects with beta-blockers and flecainide. Increased risk of additive bradycardia, conduction disturbances and digoxin toxicity with digoxin. Increased risk of bradycardia and hypotension with remifentanil and sufentanil. Increased levels of both everolimus and verapamil on concurrent use. May increase doxorubicin, buspirone, carbamazepine, ciclosporin, epirubicin, eplerenone, quinidine, statins, sirolimus, tacrolimus, quinupristin/dalfopristin levels. Verapamil increase blood alcohol levels. Unpredictable interactions with lithium. Decreased verapamil concentrations with phenobarbital, sulfinpyrazone, rifampicin, rifabutin and rifapentine. Increased verapamil concentrations with protease inhibitors and cimetidine. Potentially Fatal: Increased cardiac depressant effects with amiodarone. Increased risk of QT prolongation with dofetilide, ranolazine, sertindole. Additive bradycardia...
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