|"I show not your face but your heart's desire."|
The Laxative Potion is a potion that was included in Chapter VI of Moste Potente Potions, of which a copy is kept in the Restricted Section of the Hogwarts library. The page is opposite Chapter XVI, which concerns the Polyjuice Potion. Known instructions in the book are to add two scrumples of a certain fine ingredient, another ingredient that has been used in a furnace, and the plant Agrimonia.