Levalbuterol Tartrate Products | Cleanchem - Levalbuterol is the R-enantiomer of albuterol, a beta-2 adrenergic agonist used to treat bronchospasm in conditions like asthma and COPD. It selectively stimulates beta-2 receptors in the airway smooth muscle, leading to bronchodilation. Levalbuterol has a lower risk of cardiovascular side effects compared to racemic albuterol. It is available in inhaler and nebulizer formulations.