A spokeswoman for pharmaceutical company Roche , which manufactures Tamiflu , told CNN : `` Abnormal behavior is recognized to occur in patients with influenza virus infection including those taking and not taking antiviral drugs . `` Following extensive investigations , no mechanism has been identified by which Tamiflu could contribute to such events . Researchers say more than half of children who took Tamiflu suffered side-effects . Among reactions were nausea , nightmares and insomnia in . The drug is used to treat flu-like symptoms such as fever, runny nose or a sore throat.
Researchers say more than half of children who took Tamiflu suffered side-effects . Among reactions were nausea , nightmares and insomnia in . The drug is used to treat flu-like symptoms such as fever, runny nose or a sore throat.