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Dietary supplements: FDA may have opportunities to expand its use

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One potential measure of underreporting is the number of dietary<br />

supplement-related health problems managed as poison exposure cases<br />

by poison centers. According <strong>to</strong> annual reports by the American<br />

Association of Poison Control Centers (AAPCC), poison centers received<br />

145,775 calls from consumers or others related <strong>to</strong> dietary <strong>supplements</strong><br />

from 2008 through 2010. 34 These include cases in which the consumer<br />

<strong>to</strong>ok more than the directed amount of a product, accidentally ingested<br />

the product, or <strong>use</strong>d the product as directed but experienced an adverse<br />

event. 35 According <strong>to</strong> AAPCC reports, there were 4,863 cases of adverse<br />

events from 2008 <strong>to</strong> 2010, over 1,000 more than the 3,827 AERs <strong>FDA</strong><br />

received during the same period. 36 We could not estimate how much<br />

overlap, if any, occurred between cases reported <strong>to</strong> <strong>FDA</strong> and the poison<br />

centers or determine whether some of the cases managed by poison<br />

centers were serious and might <strong>have</strong> also been reported <strong>to</strong> firms.<br />

However, the greater number of calls received by poison centers<br />

suggests that consumers, health care practitioners, and others <strong>may</strong> <strong>have</strong><br />

contacted poison centers without reporting the adverse event <strong>to</strong> <strong>FDA</strong>.<br />

<strong>FDA</strong> officials said that they are interested in reviewing the poison center<br />

data related <strong>to</strong> dietary <strong>supplements</strong> and <strong>have</strong> held discussions with<br />

AAPCC representatives. Specifically, CFSAN officials said that they want<br />

<strong>to</strong> review the raw poison center data on dietary <strong>supplements</strong> <strong>to</strong><br />

understand what it includes and whether it would be <strong>use</strong>ful for their<br />

analysis. However, these officials said that they were unable <strong>to</strong> review the<br />

raw dietary supplement data without purchasing it and said that <strong>FDA</strong><br />

should <strong>have</strong> access <strong>to</strong> the data at no additional cost given the current<br />

34 Poison centers do not define dietary <strong>supplements</strong> according <strong>to</strong> the Federal Food, Drug,<br />

and Cosmetic Act. Therefore, we worked with AAPCC representatives and <strong>FDA</strong> officials <strong>to</strong><br />

make the appropriate adjustments <strong>to</strong> the data <strong>to</strong> make them comparable <strong>to</strong> <strong>FDA</strong>’s AERs.<br />

For more information on our scope and methodology, see appendix I.<br />

35 Based on discussions with <strong>FDA</strong> officials, we foc<strong>use</strong>d our analysis on adverse events<br />

under <strong>use</strong> as directed, since these types of cases were most similar in nature <strong>to</strong> the types<br />

of AERs <strong>FDA</strong> received.<br />

36 Beca<strong>use</strong> <strong>FDA</strong> officials <strong>to</strong>ld us that AERs are primarily associated with product <strong>use</strong> as<br />

directed, we adjusted the poison center data <strong>to</strong> include only those cases where an<br />

individual experienced an adverse reaction when using the product as directed and<br />

excluded reports resulting from mis<strong>use</strong>, ab<strong>use</strong>, or accidental ingestion.<br />

Page 21<br />

GAO-13-244 <strong>Dietary</strong> Supplements

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