Sanofi

Dupilumab is a biologic fully human monoclonal antibody against interleukin (IL)-4 receptor alpha that inhibits IL-4/IL-13 signalling, produced in Chinese hamster ovary (CHO) cells by recombinant DNA technology.

Phenergan is a potent, long-acting antihistamine with additional anti-emetic central sedative and anticholinergic properties.