Which medication is considered a purified form of albuterol?

Levalbuterol, marketed as Xopenex, is considered a purified form of albuterol. It is specifically the R-enantiomer of albuterol, while albuterol itself is a racemic mixture containing both the R and S enantiomers. The R-enantiomer has the desired bronchodilator effect, while the S-enantiomer does not contribute to this action and may actually cause some adverse effects. By using levalbuterol, patients may experience a more effective bronchodilation with potentially fewer side effects, making it particularly beneficial for individuals with asthma or other respiratory conditions who may be sensitive to the S-enantiomer found in albuterol.

Other medications listed, such as racemic epinephrine, ipratropium bromide, and Combivent, serve different purposes in respiratory care. Racemic epinephrine is often used for its vasoconstrictive properties in cases of croup or severe bronchial constriction. Ipratropium bromide is an anticholinergic agent that helps reduce bronchoconstriction by inhibiting bronchial secretions. Combivent is a combination of ipratropium bromide and albuterol, providing both bronchodilator effects through different mechanisms. However, none of these options