Hypersensitivity. Discontinue immediately if paradoxical bronchospasm occurs. Ocular complications. Insufficiently controlled DM, recent MI, severe organic heart or vascular disorders, hyperthyroidism, phaeochromocytoma, or w/ pre-existing urinary outflow tract obstruction. Patients w/ underlying severe heart disease eg, ischaemic heart disease, arrhythmia or severe heart failure. Hypokalemia. GI motility disturbances. Dyspnea. Prolonged use. Positive result to fenoterol tests. Pregnancy & lactation.