Dexamethasone provided 4 mg at every 6 hours ... A synthetic analog of ACTH, cosyntropin 0.25 mg is administered by the IV or intramuscular route. Cortisol levels are drawn before the dose ...

Intramuscular dexamethasone ameliorates croup, which is usually a several-day illness characterized by long nights of incessant, barking cough. The authors of this study compared IM and oral ...