Discontinued drugs 2008: pulmonary and allergy.

This is the annual perspectives paper on discontinued drugs in the field of pulmonary disease and allergy. It is part of a series of papers discussing drugs dropped from clinical development in the previous year and presented according to therapeutic indication. Specifically, this paper presents the six pulmonary and five allergy drugs discontinued in 2008. Information for this perspective was derived from a search of the Pharmaprojects database for drugs discontinued after reaching Phase I - III clinical trials.