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Leeches

A jar with some leeches.

"Hirudo medicinalis, the medicinal leech: popular among Muggle healers (who believe that the blood-sucking creatures are able to treat illnesses) and useful to wizards in potion-making."
Zygmunt Budge, Book of Potions.[src]

Leeches are small slug-like creatures that live in water. They feed on human blood and/or that of other small invertebrates.[1]

The Hirudo medicinalis species (vulgarly known as the medicinal leech) are used in potion-making: to make the Polyjuice Potion, four unsucculated leeches are required. [2][3] Also, a dash of leech juice is a required ingredient in the making of the Shrinking Solution. [4] Flabberghasted leeches are also used in potion-making.

Behind the scenes

  • The use of leeches in the Polyjuice Potion was chosen by J. K. Rowling to represent "[sucking] the essence out of one and into the other".[5] Interestingly, the film prop used for Moste Potente Potions suggests that the leeches used have their suckers removed.

Appearances

Notes and references

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