Does the xopenex (levalbuterol) inhaler contain steroids?

No. Xopenx is a single medicine known as a short-acting-beta agonist (saba). There is no steroid. Its base medicine is albuterol. Most drugs have two forms-the active chemical and its mirror image (kind or like a right hand and left hand). Many drugs, only one of them works as the medicine. Xopenex (levalbuterol) is the "working form" of albuterol. Used to try and decrease side effects using active form of med.