Calcort is a steroid that reduces inflammation in the body. Calcort is used to treat various types of inflammations including asthma, arthritis and allergies, problems of the digestive system, skin, eyes, kidney, heart or blood. It is also used to suppress immune response (to prevent rejections in organ transplants) and in various tumors. Calcort is used to treat Duchenne muscular dystrophy in adults and children who are at least 5 years old.