Wolfbane is an interesting plant. Steeped in folklore, both in movies and books.
In Harry Potter series it cures Lycanthrope, in the Dracula movies it keeps vampires away.
The plant is poisonous, many novels have used this poison to kill off many villains and heroes.
It is beautiful plant, the flower looks like many wildflowers, lovely shade of blue, It grows wild in the northern hemisphere. I have probably picked it and didn't know it was poisonous.
I have heard mentioned in some of the old classic wolfman movies, but not as a cure. I remember in one of the movies it was lethal to the wolfman.
I thought it made an interesting experiment to actually find some and see it is really poisonous.
Haven't decided if I am going to use it in future books; we'll see.