Rarely, paradoxical bronchospasm may occur with use of inhaled bronchodilating agents. Immediate hypersensitivity reactions (urticaria, angioedema, rash, bronchospasm) reported. Not indicated for initial (rescue) treatment of acute episodes of bronchospasm. Use with caution in narrow-angle glaucoma, in myasthenia gravis, in prostatic hyperplasia or bladder neck obstruction, and in moderate-to-severe renal impairment. Avoid inadvertent instillation of powder into the eyes.