The first line treatment for Sarcoidosis is corticosteroids, usually prednisone. If the patient has very little evidence of Sarcoidosis and a healthy immune system, many Drs will take a wait and see approach, since Sarcoidosis resolves itself all on its own in the majority of cases.
If Prednisone is ineffective, or the patient is unable to tolerate the side effects and complications of Prednisone, there are several other medications that might be tried. The most likely is Methotrexate, along with a supplement of Folic Acid.