Fingolimod is an immunosuppressant. It works by keeping immune cells trapped in your lymph nodes so they can't reach the central nervous system (brain and spinal cord). Fingolimod is used to treat relapsing multiple sclerosis (MS) in adults. This medication will not cure MS, it will only decrease the frequency of relapse symptoms. Fingolimod may also be used for purposes not listed in this medication guide.