- "Wolfsbane. A rare substance. This is no common assassin."
- ―Tywin Lannister
Wolfsbane is a lethal poison obtained from a plant of the same name. Darts dipped in it may kill a grown man quickly.
In the books
In the A Song of Ice and Fire novels wolfsbane is mentioned as a type of poison but is never employed in the narrative. Jaqen H'ghar's second victim, Weese, is seemingly killed when his dog tears out his throat.
Wolfsbane is actually a poison in real-life, made from the Aconitum plant genus, which contains 250 individual species - all collectively known as "wolf's bane".