Tell your doctor if you have used an MAO inhibitor in the past 14 days. MAO inhibitors include isocarboxazid, linezolid, methylene blue injection, phenelzine, rasagiline, selegiline, tranylcypromine, and others.
Tell your doctor about all your current medicines and any you start or stop using, especially:
any other inhaled medicines to treat asthma or COPD (chronic obstructive pulmonary disease);
an antidepressant;
a diuretic or "water pill"; or
medicine to treat a heart condition.
This list is not complete. Other drugs may interact with levalbuterol, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible interactions are listed in this medication guide.
 Xopenex drug interactions (more detail)
