Steroids kick in to improve croup symptoms in two hours

They shorten hospital stays by about 15 hours

Using glucocorticoids for croup in children lessens symptom severity after two hours and reduces return visits to the GP or hospital, a Cochrane review has found.

Researchers pooled data from 43 randomised controlled trials, including 10 from Australia, involving more than 4500 children, to update a review.