Dexamethasone is indicated for use in situations in which a rapid adrenal glucocorticoid and or anti-inflammatory effect is indicated.Dexamethasone is a synthetic corticosteroid with approximately 25 times the anti-inflammatory potency of naturally occurring cortisol ...Dexamethasone is indicated for use in situations in which a rapid adrenal glucocorticoid and or anti-inflammatory effect is indicated.Dexamethasone is a synthetic corticosteroid with approximately 25 times the anti-inflammatory potency of naturally occurring cortisol. Corticosteroids such as dexamethasone are important in normal protein, carbohydrate, and fat metabolism and for their role in controlling inflammation.