The U.S. Food and Drug Administration (FDA) approved ZINBRYTATM (daclizumab), a new once-monthly, self-administered, subcutaneous treatment for relapsing forms of multiple sclerosis (RMS), Biogen and Abbvie announced. Because of its safety profile, the use of ZINBRYTA should generally be reserved for patients who have had an inadequate response to two or more therapies indicated for the treatment of multiple sclerosis (MS).