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Hermione Granger: "What are the three most crucial ingredients in a Forgetfulness Potion?"
Ron Weasley: "I forgot."
— Ron and Hermione studying for their final exams.[src]

The Forgetfulness Potion was a potion which caused an unknown degree of memory loss in the drinker.[1] Key ingredients included Lethe River Water, mistletoe berries, and valerian sprigs. It can be found in Magical Drafts and Potions.[1]

Professor Severus Snape had his first-year students brew this potion for their final exams in 1992.

Brewing instructions

  1. Add 2 drops of Lethe River Water to your cauldron
  2. Gently heat for 20 seconds
  3. Add 2 Valerian Sprigs to your cauldron
  4. Stir 3 times, clockwise
  5. Wave your wand
  6. Leave to brew and return in 95 minutes
  7. Add 2 measures of Standard Ingredient to the mortar
  8. Add 4 Mistletoe Berries to the mortar
  9. Crush into a medium-fine powder using the pestle
  10. Add 2 pinches of the crushed mixture to your cauldron
  11. Stir 5 times, anti-clockwise
  12. Wave your wand to complete the potion

Appearances

Notes and references

Potions (class)
Wideye-or-awakening-potion
Potioneers
Arsenius Jigger · Baruffio · Bella Navarro · Bilius Finbok · Blossom Degrasse · Dai Ryusaki · Damocles Belby · Dorothy Sprottle · Erica Stainwright · Fatimah Lawang · Fleamont Potter · Gethsemane Prickle · Gilderoy Lockhart · Glossy · Glover Hipworth · Golpalott · Gregory the Smarmy · Gunhilda de Gorsemoor · Hector Dagworth-Granger · Hesper Starkey · Jalal Sehmi · J. Pippin · Laverne de Montmorency · Libatius Borage · Linfred of Stinchcombe · Mulpepper · Mundungus Fletcher · Nicolas Flamel · Phineas Bourne · Priya Treadwell · 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) · Aesop Sharp (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 · Antidote to Veritaserum · Babbling Beverage · 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 · Mandrake Restorative Draught · Memory Potion · Pepperup Potion · Polyjuice Potion · Pompion Potion · Potion for Dreamless Sleep · Rat Tonic · Regerminating Potion · Scintillation Solution · Shrinking Solution · Skele-Gro · 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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