Forsigtighed tilrådes hos digitalispatienter, patienter med hjertearytmier, hypertension, myokardieinfarkt i anamnesen, diabetes mellitus, blærehalsobstruktion eller bronkospasme i anamnesen.
Caution should be exercised in patients receiving digitalis, those with cardiac arrhythmias, hypertension, a history of myocardial infarction, diabetes mellitus, bladder neck obstruction, or positive anamnesis of bronchospasm.