Formula: Quebrith is an alchemy formula in The Witcher 3: Wild Hunt that is needed to craft quebrith.

It is guaranteed as a reward during the treasure hunt quest Don't Play with the Gods, but it can also be found at random diagram locations or purchased from the following merchants:

• Keira Metz
• Gremist at Gedyneith
• Merchant in the Perfumery in Beauclair
• Wine Merchant at Chuchote Cave
• Wine Merchant at Dun Tynne Hillside