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Epilepsy Health Center

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FDA Panel: No Warning on Epilepsy Drugs

Advisory Panel Rejects 'Black Box' Warnings of Suicide Risk
WebMD Health News

July 10, 2008 -- An expert advisory panel on Thursday backed away from an FDA proposal to place strong new warnings of suicide risk on the packaging of 11 common epilepsy drugs.

The panel's vote applies to drugs including Neurontin, Lyrica, and Topamax. All of the drugs are approved to treat epilepsy, but many are also used by doctors for a variety of other problems, including migraines and bipolar disorder.

Earlier this week, FDA officials proposed to place new warnings on the drugs and to force companies to issue new medication guides warning patients of potential risks. That was after an agency analysis of some 200 studies concluded that patients taking the drugs had nearly double the risk of suicidal thoughts or behaviors.

Eight of the 11 drugs showed an increased risk, while three did not. But the agency is still proposing to issue warnings on all of the drugs and possibly some older epilepsy drugs. The other drugs include Lamictal, valproate, oxcarbazepine (sold under the brand name Trileptal), Tegretol, tiagabine, zonisamide, levitiracetam, and felbamate.

Despite the increased risk, suicidal behavior was still relatively rare. Out of about 43,000 patients studied, 30 taking epilepsy drugs attempted suicide, vs. six who were taking placebos. Four patients on the drugs -- but none taking placebo -- completed suicide.

The advisory panel voted against placing a "black box" warning -- the agency's sternest warning -- on the drugs. Experts still urged the FDA to place some type of new warnings on the drugs, but they didn't decide what form that would take.

The FDA often follows the recommendations of its advisory panel, but isn't required to do so.

"We are looking at a signal that I feel is an important one for the field to be aware of," says Andrew Winokur, MD, a professor of psychiatry and psychopharmacology at the University of Connecticut Health Center.

Controversy Over Warnings

The agency's proposal for a warning proved controversial as soon as it was announced. The FDA was criticized in 2005 after it placed similar warnings on antidepressant medications after evidence suggested some of the drugs could lead to suicidal behavior.

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