For serious episodes of heart block and Adams-Stokes attacks, except when caused by ventricular tachycardia or fibrillation. Use in cardiac arrest until electric shock or pacemaker therapy are available. Safety and effectiveness have not been determined in children less than 12 years of age. Cardiac arrest Adams-Stokes attack, hypotension, precordial pain or distress. Wheezing, bronchitis, increase in sputum, bronchial edema and inflammation, pulmonary edema, paradoxical airway resistance.
Excessive inhalation causes refractory bronchial obstruction.
Sublingual administration may cause buccal ulceration. Side effects of drug are less severe after inhalation. Hand bulb nebulizer. If no relief occurs after 5-10 min, repeat doses once more. Metered dose inhaler.