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Study Suggests Antidepressant-Suicide Link

March 6, 2006

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An analysis of data from 24 clinical trials suggests that antidepressant medications may be linked to a modest increase in the risk of suicidal thoughts and behaviors in children, according to an article in the March issue of Archives of General Psychiatry.

For decades, some physicians have suspected that patients' risk of suicidal thoughts and behavior increased when pediatric patients first begin taking antidepressants. Research indicates that there is no such association in adults.

In 2003, a report submitted to the Food and Drug Administration (FDA) suggested a link between the antidepressant paroxetine and suicidality in pediatric patients. The FDA then requested pediatric data from the manufacturers of eight other antidepressant drugs, the authors report.

Tarek A. Hammad, M.D., Ph.D., and colleagues at the FDA performed a meta-analysis of data from 23 short-term clinical trials received in response to the request, as well as one trial funded by the National Institute of Mental Health (NIMH). The 24 studies included 4,582 pediatric patients taking one of nine antidepressant medications for depression, anxiety or other psychiatric disorder.

No children committed suicide in any of the trials. Although the NIMH-funded trial was the only individual trial to show a significant increase in suicidality among children taking antidepressants, the analysis of all the trials together showed a higher risk of suicidal ideation and behavior for children taking the drugs compared with those who were not.

"When considering 100 treated patients, we might expect one to three patients to have an increase in suicidality beyond the risk that occurs with depression itself owing to short-term treatment with an antidepressant," the authors write.

The FDA now requires warnings regarding the risk of suicidality in children on antidepressant labeling and the distribution of a patient medication guide to patients, families and caregivers, the authors write.

"Although there remain differences of opinion in the clinical community about the strength of this signal for antidepressant drug–induced suicidality in pediatric patients and the implications for clinical practice, it is important to be clear that the FDA has not contraindicated any of the antidepressant drugs for pediatric use," they conclude.

"The FDA recognizes that depression and other psychiatric disorders in pediatric patients can have significant consequences if not appropriately treated. The new warning language recognizes this need but advises close monitoring of patients as a way of managing the risk of suicidality."

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