List of NDC products with proprietary name dupixent. This medication is used to treat a skin condition called eczema (atopic dermatitis). It is also used along with other medications to help control and prevent symptoms (such as wheezing and shortness of breath) caused by asthma. Dupilumab belongs to a class of drugs known as monoclonal antibodies. It works by blocking certain natural proteins in your body (interleukin-4 and interleukin-13) that may cause inflammation and swelling. This medication should not be used to relieve sudden asthma attacks. If an asthma attack occurs, use your quick-relief inhaler (such as albuterol, also called salbutamol in some countries) as prescribed.