Deflazacort is a corticosteroid. It increases the level of glucocorticoid in the body and works by decreasing the formation of substances that cause inflammation and suppresses immunity to stop self-damage to the body by the immune system (auto-immune reactions occurring in organ transplants or cancer). It can be taken on an empty stomach or after food. Taking the medicine regularly at the right times increases its effectiveness. It is important to keep taking the medicine regularly until your doctor tells you it is safe to stop.