Who should not use Iressa (gefitinib)?

Iressa (gefitinib) "IRESSA is contraindicated in patients with severe hypersensitivity to gefitinib or to any other component of IRESSA." See: http://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=827d60e8-7e07-41b7-c28b-49ef1c4a5a41.