In Canada, in the United States and New Zealand, and determined generic use is encouraged by both provincial drug plans the implications of these pricing differences on generic and some private drug plans through the use of manda- drug expenditures. [...] Two factors determine the savings achieved through tablets or capsules) of each generic drug paid for by the the use of generic drugs: 1) how often generics are public drug program in Ontario from the IMS Brogan dispensed relative to more expensive brand name medi- PharmaStat database. [...] For example, only I matched these data to the IMS Brogan Canadian 57% of the prescriptions dispensed in Canada in 2010 CompuScript database to obtain the estimated the total were for generics, compared to 78% of prescriptions in number of units of each generic drug dispensed by the United States (3,5). [...] Per-unit pricing data for the equivalent cally these percentages ranged between 60% and 70% generic product were obtained from the following of the brand, but recent and controversial changes have sources in 2011: from the Ontario Drug Benefit moved these levels lower in almost every province, to a Formulary, from the Department of Veteran’s Affairs nationwide low of 25% in Ontario (11). [...] In 2009, over 3.0 billion units of the top 100 generic In the event a drug was listed on both comparator drug products were dispensed in Ontario, and the formularies, I used the lower of the two prices.