The Japanese Health ministry has advised doctors not to give Tamiflu (oseltamivir), to minors over the age of 10. The warning follows reports of teenagers jumping from buildings while taking the neuraminidase inhibitor, which is widely prescribed in Japan for flu, and also considered as a defence against bird flu. 

Swiss company Roche, who manufacture the drug, said large-scale statistical trials show flu patients face less risk of neuro-psychiatric disorders when they take Tamiflu.  

The European Medicines Agency recommended a labelling update for the drug, and is closely monitoring the situation, but said Tamiflu's benefits outweighed its risks.