Is kava banned in Europe?

Could you please clarify for me if there's a ban on kava in Europe? I've heard some conflicting information about its legal status within the continent, and I'm just trying to get a definitive answer. I understand that regulations might differ between countries, but is there a general prohibition across the European Union? Or is it just specific countries that have outlawed its use? Additionally, could you possibly provide some reasons as to why it might be banned in some areas, if indeed that's the case? It would be greatly appreciated.