Fluconazole; rifampicin; QT prolonging medicines eg, quinidine, disopyramide, sotalol, ibutilide, amiodarone, bepridil, pimozide, ziprasidone, sertindole, mefloquine & halofantrine, IV erythromycin, pentamidine, cisapride; clonidine; dihydropyridines; diuretics eg, furosemide, hydrochlorothiazide, indapamide; other antihypertensives; nitrates; sympathomimetics eg, epinephrine & β
2-agonists; class IA & IC IV antiarrhythmics; barbiturates; phenytoin; cimetidine; fluoxetine;
Hypericum perforatum or St. John's wort; reserpine, guanethidine, methyldopa, guanfacine & MAOIs; digoxin & digitoxin; cyclosporin; insulin & antidiabetic agents; muscle relaxants used in anaesth; β-agonist bronchodilators; NSAIDs/antirheumatic agents; oestrogens; corticosteroids; ergotamine; other β-blockers (as eye drops).