Telegraph.co.uk | Glaxo's Experimental Drug Halves Asthma Attacks in Study Businessweek Among 621 participants with severe asthma, after a year of treatment, the rate of attacks requiring oral corticosteroids, emergency room visits or hospitalizations was about half for those taking one of three monthly doses of the drug, called ... GSK drug halves attacks in hard-to-treat asthma Mepolizumab almost halves exacerbations in severe asthma patients |