A Witcher's edge is chemical. Brew a consumable once and meditating refills it for the cost of a single strong alcohol (like Alcohest) — so stock up and use them freely.
The Four Consumable Types
Potions
Timed buffs. Essentials: Swallow (health regen), Thunderbolt (+attack), Tawny Owl (stamina/Sign regen), Cat (see in the dark).
Decoctions
Long-lasting, high-toxicity buffs from monster mutagens. Ekimmara (lifesteal) and Ancient Leshen are build-defining.
Oils
Coat your blade for +damage vs a monster class (Necrophage, Vampire, Relict, Beast…). Upgrade them to Enhanced/Superior for huge bonuses.
Bombs
Grapeshot (AoE damage), Dancing Star (fire), Northern Wind (freeze), Dimeritium (disables Signs/vampires).
Toxicity
Every potion/decoction adds Toxicity. Stay under your maximum or you take damage. The Alchemy skill tree raises safe toxicity and turns high toxicity into a damage buff (the "Acquired Tolerance" / "Refreshment" perks) — the core of a potion-heavy build.
Mutations (Blood and Wine)
Unlocked in Blood and Wine, Mutations are powerful capstone perks that also unlock extra skill slots. Standouts: Euphoria (toxicity & oils boost damage — the strongest build in the game), Piercing Cold (Aard freezes), and Second Life (auto-revive).
Toxicity, in numbers
The section above says «stay under your maximum». Here is why that is harder than it sounds.
| Value | |
|---|---|
| Maximum Toxicity | 100 |
| Overdose threshold — damage above this | 50% on the next-gen version, per ConsolePulse; the Witcher Wiki gives 75% |
| A decoction costs | +50 since the 2022 next-gen update — Basilisk is the exception at +40. The original release charged +70 |
On the current next-gen version, two 50-cost decoctions add up to 100 Toxicity, past the threshold whichever of the two figures above is right; a single one stays at or under it. Either way it is the whole reason the Alchemy tree exists: Acquired Tolerance and its neighbours are not a damage bonus you take when convenient, they are the entry fee for stacking decoctions at all. And it explains why a half-committed alchemy build feels worse than no alchemy — you are paying the toxicity without the perks that turn it into damage.
How much there is, and what refills
| Type | How many | Uses stored between meditations |
|---|---|---|
| Potions | 38 | More than one |
| Oils | 36 | — |
| Decoctions | 28 | One |
| Bombs | 24 | — |
The single stored use is the detail that catches people: the advice at the top of this page — brew once, meditate, use freely — is true of potions and only half true of decoctions. Drink one, and you have none until you meditate again.
Still to verify
Cross-checked on 5 September 2026 against Fextralife and GameRant, and re-checked on 2 October 2026 against ConsolePulse and the Witcher Wiki, which disagree on the overdose threshold. The four counts still come from one player's collection breakdown reported mid-Hearts-of-Stone, so they may differ by edition. What is still unverified is the only thing reading cannot settle — nobody here has played it.