Basilisk Decoction

basilisk decoction witcher 3 wiki guide
Type Decoction
Rarity Relic
Weight weight
Effects Applies a buff increasing the intensity of a randomly selected Sign at dusk and dawn. Lasts longer than other mutagen decoctions.
Duration 5,760
Toxicity 40
Charges 1

Basilisk Decoction is a Decoction in The Witcher 3: Wild HuntDecoctions are special mixtures that Geralt can imbibe to gain various buffs with more substantial effects compared to Potions, placing a greater emphasis on synergy with the player's build and playstyle. These effects have a much longer duration, but they also incur Decoction Toxicity which, unlike Potion Toxicity, does not dissipate over time and remains active for the duration of the Decoction, essentially holding a sizeable chunk of your Toxicity bar and limiting your ability to imbibe other concoctions. Decoctions can be used at any time from the Inventory. By default, they have only 1 charge each but can be replenished by Meditating for at least one hour while possessing one or more units of Alcohol.


Basilisk Decoction Attributes in The Witcher 3

The Basilisk Decoction has the following properties:

Applies a buff increasing the intensity of a randomly selected Sign at dusk and dawn. Lasts longer than other mutagen decoctions.


This Decoction must be consumed at exactly 6AM or 6PM, otherwise the effect will not be granted. For best results, meditate to correct time and consume the Decoction from the inventory.

The Sign that is boosted will be indicated on the HUD, similar to a Place of Power's temporary bonus.


Basilisk Decoction's effects have a base duration of 5,760, but this can be improved with every single point invested in any Skills in the Alchemy Skill line. The Adaption skill also specifically improves the duration of all Decoctions up to a maximum of 50%. However, this is generally not a worthwhile skill to invest in as you get more than enough of a duration boost just by investing in any Alchemy skills.


Basilisk Decoction Crafting Information in The Witcher 3

Like all Decoctions, the Basilisk Decoction can be crafted via Alchemy after finding its Manuscript. Manuscripts can be found randomly in treasure chests, particularly in guarded treasure, but some are also sold by certain Merchants while some formulae can even be learned by reading certain books and notes.

The required ingredients for crafting Basilisk Decoction are as follows:




The formula for this Decoction can be learned by reading the book A Few Remarks on Basilisks and Cockatrices which is stocked by Marcus at Books and Scrolls in Novigrad's Hierarch Square.

The manuscript can also be found randomly.



The Witcher 3 Basilisk Decoction Notes & Trivia

  • Additional Notes & Trivia for the Basilisk Decoction go here.




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