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Castor oil

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A bottle of castor oil.

Castor oil is a vegetable oil extracted from the castor bean.[1] It was used as a potion ingredient and sold at the apothecary in Diagon Alley for 4 galleons a bottle.[2] It is also kept in the Hospital Wing.

Behind the scenes

  • In the real world, Castor oil has applications in areas such as food preservation and medicine.[1]


Notes and references

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