Drugs.com: Xopenex ( Levalbuterol ): Provides brief summary for patient.
Levalbuterol - Familydoctor.org: Information for patients in English and Spanish.
Xopenex: Full prescribing information from RxList.
Xopenex: Official pharmaceutical website by Sepracor.
Xopenex: Consumer information sheet provided by the U.S. Food and Drug Administration Center for Drug Evaluation and Research.