Over half of influenza patients in Japan showing abnormal behavior had taken the drug Tamiflu, but it is not clear if there was a causal link between the drug and their actions, a government report showed on Monday.

Japan is investigating whether there is any link between Tamiflu, made by Roche Holding AG, and neuropsychiatric problems after more than 100 people, mostly young, showed erratic behavior such as jumping from buildings after taking the drug.

There have been eight cases of deaths after abnormal or possibly abnormal behavior.

Full story: reuters.com