New warning added to flu drug label

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That warning will advise patients that seizures, hallucinations and delirium as problems seen in people taking the drug. They were most commonly seen in Japanese children taking Relenza. That country is the world's largest market for flu medications because doctors prescribe such drugs as a standard treatment for flu.

Last month, Swiss drug maker Roche made similar changes to the label for its drug, Tamiflu.

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