Do not use as treatment of asthma & acute episodes of bronchospasm. May increase the risk of asthma-related serious adverse events, including asthma-related deaths if used as treatment for asthma. Discontinue immediately if paradoxical bronchospasm & allergic reactions occur. Patients w/ narrow-angle glaucoma or urinary retention; CV (eg, CAD, acute MI, cardiac arrhythmias, HTN) & convulsive disorders or thyrotoxicosis; those unusually responsive to β
2-adrenergic agonists. Severe COPD, hypokalemia & hyperglycemia. Closely monitor plasma glucose upon initiation of treatment. ECG changes eg, flattening of T wave, prolongation of QT interval, & ST segment depression may occur. Do not co-administer w/ products containing other long-acting β-adrenergic agonists or muscarinic antagonists. Severe renal (GFR <30 mL/min/1.73 m
2) or hepatic impairment, or ESRD requiring dialysis. Pregnancy & lactation. Do not use in childn <18 yr.