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Hermione: "This is Felix Felicis, I suppose? You haven't got another little bottle of — I don't know —"
Ron: "Essence of Insanity?"
Harry: "Trust me, I know what I'm doing... or at least Felix does."
Ron and Hermione become suspicious after Harry takes Felix Felicis and says he's going to see Hagrid[src]

Essence of Insanity was a potion which caused irrational decision making in the drinker.[1][2] Known ingredients were frog brain and beetle eye.[3]

History

Considered "exceedingly dangerous", the brewing of this potion was taught to Sixth years in the 1989–1990 school year at Hogwarts, by Professor Severus Snape in Potions class.[2]

On 21 April, 1997, Ron Weasley sarcastically suggested Harry Potter took this potion after Harry consumed Felix Felicis, as he felt his friend was behaving erratically.[1]

Appearances

Notes and references

  1. 1.0 1.1 1.2 Harry Potter and the Half-Blood Prince, Chapter 22 (After the Burial)
  2. 2.0 2.1 2.2 2.3 2.4 Harry Potter: Hogwarts Mystery, Year 6, Chapter 39 (Gather the Merqueen's Tribute) - Potions Lesson "Essence of Insanity"
  3. 3.0 3.1 3.2 Harry Potter: Magic Awakened
Potions (class)
Wideye-or-awakening-potion.png
Potioneers
Arsenius Jigger · Bilius Finbok · Blossom Degrasse · Damocles Belby · Erica Stainwright · Fleamont Potter · Gethsemane Prickle · Gilderoy Lockhart · Glossy · Glover Hipworth · Golpalott · Gregory the Smarmy · Gunhilda de Gorsemoor · Hector Dagworth-Granger · Hesper Starkey · J. Pippin · Laverne de Montmorency · Libatius Borage · Linfred of Stinchcombe · Mulpepper · Mundungus Fletcher · Nicolas Flamel · Phineas Bourne · Quintia McQuoid · Regulus Moonshine · Rogue alchemist · Rubens Winikus · Sacharissa Tugwood · Skower · Tilden Toots · Dr Ubbly · Vindictus Viridian · Zenith Xeep · Zygmunt Budge
Potions at Hogwarts
Cauldron cupboard · Dungeon Five · Potions basement · Potions Classroom · Potions Club · Potions Staircase · Potion Master's office · Potions Storeroom
Professors Bartholomew · Horace Slughorn · Severus Snape · Swoopstikes · Unnamed Professor (16th century) · Unnamed Professor (19th century) · Unnamed Professor (2021)
Textbooks A Collection of Above Three Hundred Receipts in Cookery, Physick, and Surgery · Advanced Potion-Making · Ingredient Encyclopedia · Magical Drafts and Potions · One Thousand Magical Herbs and Fungi
Potions studied at Hogwarts
Ageing Potion · Amortentia · Antidotes · Antidote to Common Poisons · Antidote to garish pink blended poison · Antidote to Uncommon Poisons · Befuddlement Draught · Calming Draught · Cheese-Based Potions · Confusing Concoction · Cough potion · Cure for Boils · Deflating Draught · Doxycide · Draught of Living Death · Draught of Peace · Elixir to Induce Euphoria · Erumpent Potion · Essence of Insanity · Everlasting Elixirs · Felix Felicis · Fire Protection Potion · Forgetfulness Potion · The Famous French Method for the Bite of a Mad Dog · Garish pink blended poison · Garrotting Gas · Girding Potion · Hair-Raising Potion · Herbicide Potion · Hiccoughing Solution · Invigoration Draught · Laughing Potion · Memory Potion · Pepperup Potion · Polyjuice Potion · Pompion Potion · Potion for Dreamless Sleep · Rat Tonic · Regerminating Potion · Scintillation Solution · Shrinking Solution · Skele-Gro · Sleeping Draught · Strength Potion · Strengthening Solution · Swelling Solution · Undetectable Poisons · Veritaserum · Weedosoros · Wideye Potion · Wiggenweld Potion · Wit-Sharpening Potion · Wolfsbane Potion · Wound-Cleaning Potion
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