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Journal of Ophthalmology
Volume 2015, Article ID 547960, 8 pages
http://dx.doi.org/10.1155/2015/547960
Research Article

Comparison of United States and Canadian Glaucoma Medication Costs and Price Change from 2006 to 2013

1Department of Ophthalmology & Vision Sciences, University of Toronto, 340 College Street, Suite 400, Toronto, ON, Canada M5T 3A9
2Toronto Western Hospital, East Wing 6-405, Bathurst Street, Toronto, ON, Canada M5T 2S8
3Kensington Eye Institute, 340 College Street, Suite 400, Toronto, ON, Canada M5T 3A9

Received 9 December 2014; Accepted 5 March 2015

Academic Editor: Terri L. Young

Copyright © 2015 Matthew B. Schlenker et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Objective. Compare glaucoma medication costs between the United States (USA) and Canada. Methods. We modelled glaucoma brand name and generic medication annual costs in the USA and Canada based on October 2013 Costco prices and previously reported bottle overfill rates, drops per mL, and wastage adjustment. We also calculated real wholesale price changes from 2006 to 2013 based on the Average Wholesale Price (USA) and the Ontario Drug Benefit Price (Canada). Results. US brand name medication costs were on average 4x more than Canadian medication costs (range: 1.9x–6.9x), averaging a cost difference of $859 annually. US generic costs were on average the same as Canadian costs, though variation exists. US brand name wholesale prices increased from 2006 to 2013 more than Canadian prices (US range: 29%–349%; Canadian range: 9%–16%). US generic wholesale prices increased modestly (US range: −23%–58%), and Canadian wholesale prices decreased (Canadian range: −38%–0%). Conclusions. US brand name glaucoma medications are more expensive than Canadian medications, though generic costs are similar (with some variation). The real prices of brand name medications increased more in the USA than in Canada. Generic price changes were more modest, with real prices actually decreasing in Canada.