Horizon Therapeutics USA, Inc.Usage: RAYOS is indicated for severe allergic conditions, various dermatologic and endocrine diseases, gastrointestinal disorders (like Crohn's and ulcerative colitis), hematologic issues, neoplasms, nervous system conditions (such as multiple sclerosis), certain ophthalmic diseases, organ transplant rejection, pulmonary disorders, renal conditions, rheumatologic ailments, and specific infectious diseases.