Professor[1] Arsenius Jigger was a wizard and an author specialising in Potions and Defence Against the Dark Arts, having written: Magical Drafts and Potions,[2] Potion Opuscule,[3] and The Essential Defence Against the Dark Arts.[4]

Arsenius Jigger also contributed to Transfiguration Today in the 1920s such as the article Lycanthropy v. Werewolfry.[5] He was also, at an unknown point, a professor of Defence Against the Dark Arts at Hogwarts School of Witchcraft and Wizardry.[1] A shop in Diagon Alley bears the name Slug and Jiggers, and may belong to him.


  • Arsenius may be derived from the word "arsenious" meaning "containing arsenic", a very poisonous metallic element. Arsenius may also be be a reference to the famous physicist and chemist Svante Arrhenius. A jigger is a liquid measurement, often for liquor, of 1½ fluid ounces (44 millilitres).


Notes and references

Potions (class)
Professors: 16th century Professor · Vindictus Veridian · Severus Snape · Horace Slughorn
Textbooks: Magical Drafts and Potions · One Thousand Magical Herbs and Fungi · Advanced Potion-Making · Moste Potente Potions · A Collection of Above Three Hundred Receipts in Cookery, Physick, and Surgery
Potions at Hogwarts: Potions Classroom · Potions Staircase · Potions basement · Potions Club · Potion Master's office · Potion Master's storeroom · Dungeon Five · Cauldron cupboard
Potioneers: Arsenius Jigger · Damocles · Glover Hipworth · Golpalott · Gregory the Smarmy · Gunhilda of Gorsemoor · Hector Dagworth-Granger · Hesper Starkey · J. Pippin · Laverne de Montmorency · Libatius Borage · Regulus Moonshine · Rubens Winikus · Sacharissa Tugwood · Tilden Toots · Dr. Ubbly · Zygmunt Budge
Potions Studied: Boil-Cure Potion · Forgetfulness Potion · Hair-Raising Potion · Shrinking Solution · Undetectable Poisons · Wiggenweld Potion · Girding Potion · Antidotes · Strengthening Solution · Everlasting Elixirs · Felix Felicis · Draught of Living Death · Amortentia · Elixir to Induce Euphoria · Hiccoughing Solution · Poison Antidote · Swelling Solution · Draught of Peace · Wit-Sharpening Potion · Polyjuice Potion