M.P.A. is used to treat allergies, breast cancer, Crohn disease, endocrine disorders, eye disorders, respiratory disorders, skin disorders, acute exacerbation of multiple sclerosis, fever due to malignancy, and high blood calcium levels due to malignancy, inflammatory disorders of the musculoskeletal system, intracranial tumors, leukemia, malignant lymphoma, multiple myeloma, prostate cancer, and ulcerative colitis.