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Bezoars (Antidote to Poison) HBP
Object information

In a goat's stomach


Antidote for most poisons

"A bezoar is a stone taken from the stomach of a goat and it will save you from most poisons."
—Snape lecturing in Harry Potter's first year Potion class.[src]

As every first year Potions student learns, a bezoar is a stonelike mass taken from the stomach of a goat that acts as an antidote to most poisons, but does not work on everything. This is the reason why bezoars are used in the preparation of the Antidote to Common Poisons. This object is usually made of hair, plant fiber, or similar indigestible matter that stays in the gut of an animal and forms a hard ball or "stone".


"Just shove a bezoar down their throats."
—A note by the Half-Blood Prince in his copy of Advanced Potion-Making[src]

There is a small stock of bezoars in the Potions Classroom store cupboard. Severus Snape asks Harry Potter where to find a bezoar in Harry's first Potions class; when Harry is unable to answer this or any of the teacher's other questions, he earns Snape's contempt. Three years later, in a Potions exam, Harry forgets to add a bezoar to his potion, because he was thinking about asking Cho Chang to the Yule Ball. This earns him bottom marks.

As a student at Hogwarts, the Half-Blood Prince wrote "Just shove a bezoar down their throats." across the list of antidotes in his copy of Advanced Potion-Making. During his sixth-year class about antidotes, Harry, who was unable to understand Golpalott's Third Law, fetched a bezoar from the cupboard and showed it to Professor Horace Slughorn as the answer to the poison he was supposed to be analysing. This gained Harry Slughorn's admiration and ten points to Gryffindor for "sheer cheek."

Known Users

On 1 March, 1997, Ron Weasley was poisoned when he drank some oak-matured mead that was intended for Professor Dumbledore. Harry, remembering the above mentioned incident in Potions class, quickly found the bezoar he had given Professor Slughorn and shoved it down Ron's throat, saving his life.


Bezoars are undigested clumps of matter that accummulate inside a digestive system, similar to a cat's hairballs. They are used in Chinese herbology, and are claimed to remove toxins from the body. The word "bezoar" may come from the Persian pâdzahr (پادزهر), which literally means "protection from poison."

Behind the scenes

  • The bezoar was used as part of a solution to a puzzle in one of the books of the Lord Peter Wimsey series, which J. K. Rowling is known to be a fan of.[citation needed] This may have contributed to Rowling including a bezoar as a minor plot point in Half-Blood Prince.


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