Learn About Horizon Therapeutic's Recently Approved Active Thyroid Eye Disease Drug Tepezza (teprotumumab-trbw). Granted Orphan Drug Status by the FDA, Tepezza is a monoclonal antibody (mAb) that provides vision care clinicians and other medical professionals a new option to treat this rare disease. Go straight to our home page by clicking "Learn More" below and click on the eyeball featured in our scrolling display...