On March 14, 2018, the Discipline Committee of the Ontario College of Pharmacists found that two directors of Costco pharmacies committed acts of professional misconduct by soliciting $1,266,000 in payments related to advertising which would reasonably be regarded as rebates for purchase of interchangeable drug products, contrary to provisions of the Drug Interchangeability and Dispensing Fee Act and the Ontario Drug Benefit Act. The pharmacists were each fined $20,000.