Dupixent Injection Pen 300 mg/2 mL Prefilled Autoinjector Pens 2 Per Box **Requires Refrigeration**Dupixent Injection Pen 300mg 2 mL Prefilled Autoinjector Pens 2 Per Box. DUPIXENT is a prescription medicine used: to treat adults and children 6 months of age and older with moderate to severe eczema (atopic dermatitis or AD) that is not well controlled with prescription therapies used on the skin (topical), or who cannot use topical therapies. NDC: 00024 5914 01. DUPIXENT is a prescription medicine used: to treat adults and children 6 months of age