what's the difference between xopenex and albuterol?
 The difference between xopenex and albuterol is that Xopenex (levalbuterol HCl) Inhalation Solution is indicated for the treatment or prevention of bronchospasm in adults, adolescents, and children 6 years of age and older with reversible obstructive airway disease, while albuterol is used only as a rescue inhaler for asthmatic patients. 