MOUNTAIN VIEW, Calif., Dec. 14 /PRNewswire-FirstCall/ -- Alexza Pharmaceuticals, Inc. (Nasdaq: ALXA) today announced that it has submitted its New Drug Application (NDA) for Staccato® loxapine (AZ-004) to the US Food and Drug Administration (FDA). AZ-004 is an inhalation product candidate being developed for the rapid treatment of agitation in patients with schizophrenia or bipolar disorder. The IND for Staccato loxapine was filed with the FDA in August 2005.