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Research finds 'dispense as written' prescriptions may add $7.7 billion to annual health care costs
Date:3/25/2011

March 25, 2011 Approximately five percent of prescriptions submitted by CVS Caremark Pharmacy Benefit Management (PBM) members in a 30-day period during 2009 included a "dispense as written" (DAW) designation. This practice whereby doctors or patients demand the dispensing of a specific brand-name drug and not a generic alternative costs the health care system up to $7.7 billion annually, according to a new study by researchers at Harvard University, Brigham and Women's Hospital and CVS Caremark. Moreover, these requests reduce the likelihood that patients actually fill new prescriptions for essential chronic conditions.

In a study published this week in the American Journal of Medicine, the researchers demonstrate that DAW designations for prescriptions have important implications for medication adherence. They found that when starting new essential therapy, chronically ill patients with DAW prescriptions were 50 to 60 percent less likely to actually fill the more expensive brand name prescriptions than generics. "Although dispense as written requests would seem to reflect a conscious decision by patients or their physicians to use a specific agent, the increased cost sharing that results for the patient may decrease the likelihood that patients actually fill their prescriptions," the researchers said.

"This study shows that dispense as written requests are costing the health care system billions," said William H. Shrank, MD, MSHS, of Brigham and Women's Hospital and Harvard, and the study's lead author. "The further irony is that patients with prescriptions specifying a certain brand seem less likely to fill their initial prescriptions, adding to the medication non-adherence problem."

"Previous to this study, little was known about the frequency with which doctors and patients request dispense as written prescriptions," said Troyen A. Brennan, MD, MPH, executive vice president and Chief Medical Officer of CVS Caremark and
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Contact: Jon Sandberg
jlsandberg@cvs.com
401-770-4914
Brigham and Women's Hospital
Source:Eurekalert

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