7. Wolf's bane (Aconitum)
Wolf's bane is the name of a genus of flowering plants in the Ranunculaceae family. Identifiable by its beautiful flowers, wolf's bane is a fast-acting poison which can result in nausea, vomiting, paralysis, breathing and heart problems before killing you. It was used to create poison arrows in China and like Belladonna, was a popular poison in ancient Rome. Wolf's bane got its name from when it was used to poison wolves and panthers in the eighteenth century. As fact often blurs into fiction, this use has morphed in popular culture, where it is often shown to be an effective werewolf deterrent.