DUPIXENT works by blocking the signaling of 2 proteins that contribute to a type of inflammation that plays a major role in atopic dermatitis.

DUPIXENT affects the body’s immune system to help reduce the inflammation associated with moderate-to-severe eczema, which may reduce symptoms such as rash, redness, and itch. It is not known if DUPIXENT can affect the immune response to parasitic (helminth) infections.