- Subject has participated in prior efficacy studies of intranasal civamide: WL-1001-02-01, WL-1001-02-02, WL-1001-02-03 or WL-1001-02-05. (This does not include any subject who entered the screening period for study WL-1001-02-01, WL-1001-02-02, WL-1001-02-03 or WL-1001-02-05 but did not randomize to treatment).