During the 1999/2000 fiscal year, approximately 19% of beneficiaries in the Nova Scotia Seniors' Pharmacare Program (NSSPP), a publicly funded drug insurance program in Nova Scotia, Canada, received inhaled respiratory medications by wet nebulization. The cost was estimated at more than Can $2 million annually. On August 1, 2000, the NSSPP initiated new criteria-based reimbursement guidelines for wet nebulized respiratory medications, requiring prior authorization.