It was originally synthesised from shikimic acid extracted from the star anise plant .
It was the second inhibitor of the viral neuraminidase to be developed , after zanamivir , and the first to be taken as an oral tablet .
inhibitor was originally synthesised from shikimic acid extracted from the star anise plant .
It was the second inhibitor of the viral neuraminidase to be developed , after zanamivir , and the first to be taken as an oral tablet .