Levalbuterol Home>Pharmacy>Drugs_and_Medications>L>Levalbuterol     Web Pages Xopenex Full prescribing information from RxList. Levalbuterol - Familydoctor.org Information for patients in English and Spanish. Drugs.com: Xopenex ( Levalbuterol ) Provides brief summary for patient. Xopenex Official pharmaceutical website by Sepracor. Xopenex (Levalbuterol) Manufacturer's description of this asthma medication.