Hi, You should really discus this with the doctor treating your sarcoidosis. My understading of the disease is that is it an auto-immune disease with an overactive immune system. Therefore, you would most likely on the prednesone to suppress your immuse system. I could be wrong. If this is the case, I doubt you have options, but your doctor would know your situation best.
Take care.
Prednisone not only causes swelling, it causes atrophy of the adrenal glands, and withdrawel should be under the sipervision of a physician.
You might ask your physician to try formoterol fumarate inhalation powder, together with a low-dose inhaled steroid.