Not for acute episodes of bronchospasm ie, as a rescue therapy. Discontinue if immediate hypersensitivity reactions; paradoxical bronchospasm occurs. Narrow-angle glaucoma or urinary retention; unstable ischaemic heart disease, left ventricular failure, history of MI & long QT syndrome or prolonged QTc, arrhythmia (excluding chronic stable atrial fibrillation). Patients w/ rare hereditary problems of galactose intolerance, Lapp lactase deficiency or glucose-galactose malabsorption. Monitor closely patients w/ severe renal impairment including those w/ ESRD requiring dialysis for potential AR. Pregnancy & lactation. Not to be used in childn <18 yr.