Quote from : Harry Potter and the Sorcerer's Stone Movie

[deleted scene]
Professor Severus Snape: For your information Potter, Asphodel and Wormwood make a sleeping potion so powerful it is known as the Draught of the Living Death, a Bezoar is a stone taken from the stomach of a goat and it will save you from most poisons. As for Monkshood and Wolfbane, they are the same plant which also goes by the name of Aconite. Well, why aren't you all copying this down?