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Depression Health Center

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Different Antidepressants, Same Suicide Risk

Fourfold Increase in Suicide Risk in First Days of Drug Treatments
WebMD Health News

July 20, 2004 -- Suicidal behavior isn't any more common in adults and teens taking SSRI-type antidepressants than in those taking tricyclic antidepressants, a look-back study shows.

However, a new study shows a fourfold increase in nonfatal suicidal behavior during the first nine days of treatment with any of four different antidepressants -- two SSRIs (Prozac and Paxil) and two tricyclics (Elavil and dothiepin; the latter is not sold in the U.S.). This risk remains three times higher during days 10-29 of treatment than after 90 days of treatment.

Fatal suicide is 38 times more likely during the first nine days of treatment. However, none of the 10- to 19-year-old patients in the study committed suicide.

Recent reports have shown that the newer SSRI antidepressants may increase suicide risk in teens and even in adults. The U.S. FDA recently warned doctors prescribing any antidepressant drugs -- not just SSRIs -- to keep a close eye on patients for possible suicidal behavior.

The report in the July 21 issue of the Journal of the American Medical Association makes this seem like very wise advice, says study co-author James A. Kaye, MD, DrPH. Kaye is senior epidemiologist for the Boston Collaborative Drug surveillance program and associate professor at the Boston University School of Public Health.

"The issue really is whether the risk for suicide behavior and suicide itself varies among the users of these different drugs. We found there were not major differences," Kaye tells WebMD. "Yet the time period after starting any of these treatments is a high-risk period. We agree that there should be careful monitoring of patients who have started on these drugs, as the FDA has already advised."

The findings are "moderately reassuring," says Simon Wessely, MD, professor of psychiatry at King's College School of Medicine and the Institute of Psychiatry, London.

"This study reminds us that depression itself is linked to deliberate self-harm," Wessely tells WebMD. "And it tells us that SSRIs have no more effect on suicide than any other antidepressant drug. So if there is an association between antidepressant drugs and suicidal behavior, it is no different for any of the antidepressants."

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