To the Editor: Drs. Lansang and Hustak 1 provide a comprehensive and useful review of steroid-induced diabetes and adrenal suppression.
In their section on local steroids, they discuss the side effects of topical and inhaled glucocorticosteroids. Much has been made of the fact that certain steroids, such as mometasone (Elocon, Nasonex) and fluticasone (Flonase), have a higher “therapeutic index” or ratio of local anti-inflammatory effect to systemic side effects, due to extensive hepatic first-pass metabolism, than older agents such as beclomethasone (Qvar) and betamethasone (Diprosone). 2 Ciclesonide (Alvesco, Omnaris), a newer inhaled steroid, is said to have an enhanced therapeutic index because it is a prodrug that is activated by metabolism in the lungs; it reportedly has an even less suppressive effect on hypothalamic-pituitaryadrenal axis function. 3
Are the authors aware of any other evidence that clinical outcome, such as adrenal suppression or hyperglycemia, is improved by the use of steroids with a higher therapeutic index?