Prednisone is a synthetic corticosteroid drug that is usually taken orally but can be delivered by intramuscular injection and can be used for a great number of different conditions. It has a mainly glucocorticoid effect. Prednisone is a prodrug that is converted by the liver into prednisolone, which is the active drug and also a steroid. Prednisone is particularly effective as an immunosuppressant, and affects virtually all of the immune...