R-zileuton for use in conditions associated with increased 5-lipoxygenase activity and / or increased leukotriene activity, such as asthma

摘要

The invention pertains to a method of treating a condition mediated by or characterized by increased 5-lipoxygenase activity like for instance asthma in a patient suffering therefrom comprising administering to said patient a composition comprising (R)-zileuton and a pharmaceutically acceptable excipient, wherein said composition is substantially free of (S)-zileuton.