Ads for SSRI antidepressants misleading?

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Consumer ads for a class of antidepressants called SSRIs often claim that depression is due to a chemical imbalance in the brain, and that SSRIs correct this imbalance, but these claims are not supported by scientific evidence, according to a new article in PLoS Medicine.

The researchers studied U.S. consumer ads for SSRIs from print, television, and the Internet. They found widespread claims that SSRIs restore the serotonin balance of the brain. “Yet there is no such thing as a scientifically established correct ‘balance’ of serotonin,” the authors say. They say that in the scientific literature it is openly admitted that the serotonin hypothesis remains unconfirmed and that there is “a growing body of medical literature casting doubt on the serotonin hypothesis,” which is not reflected in the consumer ads.

The authors point out that the widely televised animated Zoloft (setraline) commercials have dramatized a serotonin imbalance and stated, “Prescription Zoloft works to correct this imbalance.” Advertisements for other SSRIs, such as Prozac (fluoxetine), Paxil (paroxetine), and Lexapro (escitalopram), have made similar claims.

The authors say that while the Irish equivalent of the FDA, the Irish Medicines Board, recently banned GlaxoSmithKline from claiming in their patient information leaflets that paroxetine (Paxil) corrects a chemical imbalance, the FDA has never taken any similar action on this issue.

Commenting on the work, Australian researcher David Healy said: “The serotonin theory of depression is comparable to the masturbatory theory of insanity. Both have been depletion theories, both have survived in spite of the evidence, both contain an implicit message as to what people ought to do. In the case of these myths, the key question is whose interests are being served by a widespread promulgation of such views rather than how do we test this theory.”

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Full article is at http://medicine.plosjournals.org/perlserv/?request=get-document&doi=10.1371/journal.pmed.0020392

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This page contains a single entry by Gary Schwitzer published on November 9, 2005 9:00 AM.

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