This item is not needed to craft any item.
- Ard Skellige- Formula can be bought from Gremist on Ard Skellige
- Novigrad- During the quest Now or Never, in the sewers of Novigrad
- During the quest Contract: Muire D'yaeblen in Abaya's lair.
Trivia or Notes about Superior Swallow
- Of all the Superior (Level 3) Alchemy Formulae in the game, Superior Swallow is the only one that requires TWO of a Special Alchemical Ingredient (such as Rubedo, Quebrith, Albedo, etc.—Vitriol in the case of Superior Swallow) to make.