Elanco Animal Health Incorporated (NYSE:ELAN) today announced the phased launch of Befrena™ (tirnovetmab), a new anti-IL-31 monoclonal antibody (mAb) injection for treatment of canine allergic and atopic dermatitis. The launch comes at a key time, with a longer and more intense allergy season anticipated across the country this year.i With nearly 2 in 3 itchy dogs experiencing worse itch during allergy seasonii, Befrena expands Elanco's dermatology portfolio by offering a new treatment option that starts controlling allergic itch within 24 hours. By neutralizing IL-31, a key cytokine involved in sending itch signals to the brain, Befrena offers a differentiated 6 to 8 weeks dosing interval, providing veterinarians and pet owners with a new level of convenience and efficacy.