The article cites a study that examines the effectiveness of montelukast to decrease the severity of an asthma attack when given early in an acute attack to children with intermittent asthma. A total of 220 children are randomly assigned to receive montelukast or placebo. Parents or caregivers administer the drugs at the onset of asthma symptoms or at the first sign of an acute upper respiratory infection. It is found that montelukast is able to reduce an asthma attack's severity given the conditions. However, it is not clear whether montelukast is better than steroids or if it is effective for children who are taking controller medications.