If paradoxical bronchospam occurs, discontinue treatment & consider other treatment. Patients w/ narrow-angle glaucoma, prostatic hyperplasia, or bladder-neck obstruction, particularly if receiving an anticholinergic by another route; DM, ischemic heart disease or recent MI, severe organic heart or vascular disorders, arrhythmia or severe heart failure, hyperthyroidism, phaeochromocytoma. Hypokalemia. Deterioration of asthma control w/ increasing use of bronchodilators. Concomitant use w/ other sympathomimetic bronchodilators. May affect the ability to drive & use machines. Pregnancy & lactation. Childn. Elderly.