Xopenex®-HFA inhaler. Levalbuterol (Xopenex®) is the R-enantiomer of the short-acting β2-adrenergic receptor agonist albuterol. As a bronchodilator, it is used to treat asthma and COPD. In general, levalbuterol has similar effects, pharmacokinetics, and pharmacodynamics to albuterol. However, its manufacturer, Sepracor, has implied (although not directly claimed) that the presence of only the R-enantiomer produces fewer side-effects. Physicians sometimes elect to use levalbuterol in ...
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Levalbuterol Clinical Trials