Author Affiliations: Department of Health Policy and Management, Graduate School of Public Health, University of Pittsburgh, (Dr Zhang and Mr Zhou), and VA Pittsburgh Healthcare System, Division of General Medicine, University of Pittsburgh School of Medicine, and the RAND Corporation (Dr Gellad), Pittsburgh, Pennsylvania.
Drs Brown and Huesch raise several important points in their letters regarding our Research Letter on $4 generic drugs1: (1) traveling costs were not subtracted from the savings; (2) Medicare savings were inflated because of the donut hole; (3) other unmeasured potential negative impacts exist; and (4) some stores lose money from offering $4 programs so $4 programs might not be sustainable at the societal level if everyone were to switch to the $4 programs.
Zhang Y, Zhou L, Gellad W. The True Cost of Discounted Medication Programs—Reply. Arch Intern Med. 2011;171(17):1595-1596. doi:10.1001/archinternmed.2011.412