Harry Potter Wiki
Register
Advertisement
Harry Potter Wiki

"Second-year Hogwarts students brew Swelling Solution in Potions class. This potion causes things to grow and expand. Its effects can be reversed with a Deflating Draught."
— Description[src]

The Swelling Solution was a potion which caused whatever it touched to swell in size.[1] Its three ingredients were bat spleens, dried nettles, and puffer-fish eyes.[2] Fermentation was needed before it could be considered a proper stable potion.[4]

History[]

SwellingSolutionHM

A bottle of Swelling Solution

During the 1985–1986 school year at Hogwarts School of Witchcraft and Wizardry, Professor Severus Snape taught his second-year Potions students how to brew this potion.[3]

The trio decided to steal some ingredients for the Polyjuice Potion from Professor Snape's private stores in their second year the day the class tried to make this potion. Harry Potter set off one of his fireworks as a diversion for Hermione Granger to get the necessary ingredients; whether intentionally or accidentally, the firework landed in Gregory Goyle's cauldron, causing the solution to explode across the class, most notably affecting Draco Malfoy, who got it in the face and endured his nose swelling to the size of a melon, and Goyle himself, whose eyes expanded to the size of dinner plates; other afflictions included arms like clubs and gigantic puffed-up lips which rendered speech impossible. Those splashed had to go to Snape for a Deflating Draught.[1]

In the 2010–2011 school year, Professor Slughorn taught his third-year students how to brew the Swelling Solution.[5]

Brewing instructions[]

Part 1[]

  1. Add 2 scoops of dried nettles to the mortar
  2. Add 3 puffer-fish eyes to the mortar
  3. Crush into a medium-fine powder
  4. Add 2 measures of the crushed mix to your cauldron
  5. Add two tablespoons of water to the powder in the cauldron and mix them together
  6. Heat on a medium temperature for twenty minutes
  7. Add some more water to the cauldron and stir the mixture carefully
  8. Wave your wand
  9. Leave to brew and return in 2 hours (Copper), 2 Hours and 30 Minutes (Brass), or 3 hours (Pewter).[2]

Part 2[]

  1. Add 1 bat spleen to the cauldron
  2. Stir 4 times, anti-clockwise
  3. Heat to low for 30 seconds
  4. Wave your wand to complete the potion[2]

Appearances[]

Notes and references[]

  1. 1.0 1.1 1.2 1.3 1.4 Harry Potter and the Chamber of Secrets, Chapter 11 (The Duelling Club)
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Swelling Solution Book on Pottermore
  3. 3.0 3.1 3.2 3.3 Harry Potter: Hogwarts Mystery, Year 2, Chapter 10 (The Vault of Ice) - Potions Lesson "Swelling Solution"
  4. Fantastic Beasts: Cases from the Wizarding World
  5. Harry Potter: Magic Awakened, Time-Limited Task (Snape's birthday)
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
Advertisement