Prednisone is used to reduce inflammation (swelling) and overactivity in your immune system. Doctors prescribe it to treat a wide variety of inflammatory and autoimmune health conditions. Prednisone is a prescription corticosteroid (steroid) used to reduce inflammation, suppress an overactive immune system, and treat endocrine and metabolic disorders. Prednisone is a corticosteroid (cortisone-like medicine or steroid). It works on the immune system to help relieve swelling, redness, itching, and allergic reactions. This medicine is available only with your doctor's prescription. Prednisone is a steroid medication that treats conditions like asthma, allergic reactions, arthritis, inflammatory bowel disease and adrenal, blood or bone marrow conditions. Corticosteroid medicines include cortisone, hydrocortisone and prednisone, among others. They help treat rashes, inflammatory bowel disease, asthma and several other conditions. But corticosteroids also may have serious side effects. Learn about the side effects of prednisone, from common to rare, for consumers and healthcare professionals. Prednisone is a prescription medicine used to treat acute asthma, arthritis, allergic reactions, respiratory illness, and many other conditions. Learn about dosage, side effects, warnings, and more. Prednisone is a glucocorticoid medication mostly used to suppress the immune system and decrease inflammation in conditions such as asthma, COPD, and rheumatologic diseases. [3] It is also used to treat high blood calcium due to cancer and adrenal insufficiency along with other corticosteroids. [3] It is taken by mouth. [3] Prednisone oral tablet is a prescription steroid that treats various conditions involving inflammation. Learn about uses, side effects, and more. Prednisone is an oral corticosteroid. It's taken by mouth by adults and children to treat health conditions related to an overactive immune system or inflammation, such as allergies and certain skin conditions.