Tokyo (AP) -- Japanese doctors are being warned not to prescribe TamiFlu for teenagers.
The emergency warning comes after several young patients using the flu-fighting drug reportedly exhibited dangerous behavior.
Officials say two teenagers taking the drug fell to their deaths and two others broke legs after jumping from their homes.
In the US, the FDA has said it's received more than 100 reports of delirium, hallucinations and other unusual psychiatric behavior in 2005 and 2006, mostly in Japanese children.
TamiFlu is widely used in Japan to treat influenza. It is also one of the few drugs believed to be effective in fighting Bird Flu.
The drug's maker says there's been no data linking the drug to abnormal behavior in young patients. Both the company (Roche Holding AG) and the FDA have said such symptoms could stem from severe cases of the flu.
Copyright 2007 by the Associated Press. All rights reserved.
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