What exactly does Dupixent do?

Dupixent works by calming down your immune system and reducing inflammation. Dupixent does this by blocking specific immune signals that are responsible for inflammation. These signals are called cytokines, which the cells of your immune system use to communicate with each other. Specifically, Dupixent blocks interleukin-4 and interleukin-13. These two signals play an important role in asthma, atopic dermatitis, and other conditions that Dupixent treats. View original source