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Paxil Suicide Risk in Young Adults

FDA and Drug's Maker Warn Doctors of Possible Risk in Adults Aged 18-30
WebMD Health News
Reviewed by Louise Chang, MD

May 12, 2006 -- The antidepressant Paxil and its controlled-release version, Paxil CR, are getting a new warning about suicide risk in young adults.

The FDA and Paxil's maker, drug company GlaxoSmithKline, are notifying doctors about the warning, which is being added to the drug's package inserts.

Antidepressants already carry a warning about a possible increase in suicidal thinking and behavior in children and adolescents with depressiondepression and other psychiatric disorders who take antidepressants.

The new Paxil warning focuses on young adults aged 18-30. Paxil (paroxetine) is not approved for patients younger than 18.

"It is important that all patients, especially young adults and those who are improving, receive careful monitoring during paroxetine therapy regardless of the condition being treated," state an FDA news release and GlaxoSmithKline's letter to doctors.

GlaxoSmithKline's letter states that the company "continues to believe that the overall risk: benefit of paroxetine in the treatment of adult patients with MDD [major depressive disorder] and other non-depressive psychiatric disorders remains positive."

About the Warning

GlaxoSmithKline's letter to doctors is posted on the FDA's web site.

The letter states that GlaxoSmithKline recently conducted a new analysis (in addition to numerous previous analyses) of suicidal behavior and suicidal thinking in adults participating in clinical trials of Paxil.

Participants in those clinical trials had psychiatric disorders including MDD, other depression, and nondepression disorders. Nearly 9,000 were taking Paxil and almost 6,000 others were taking a placebo.

The analysis showed a higher frequency of suicidal behavior in young adults (aged 18-24) with Paxil compared with placebo, but not in older adults. The age gap was not statistically significant, meaning it may have been due to chance.

Another analysis focused on adults of all ages with major depressive disorder. The frequency of suicidal behavior was higher among those taking Paxil than placebo, with 11 cases of suicidal behavior among 3,455 patients taking Paxil and one out of 1,978 taking placebo.

Overall, 0.32% of the Paxil patients of all ages with major depressive disorder showed suicidal behavior, compared with 0.05% of those taking placebo.

"All of the reported events of suicidal behavior in the adult patients with MDD were nonfatal suicide attempts, and the majority of these attempts (8 of 11) were in younger adults aged 18-30," states GlaxoSmithKline's letter.

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