Alchemy

 is an active skill in.

Effects
Alchemy has the following effects:
 * Increases the power level of all consumed Drugs and Potions by  (1 per point).
 * Increases the power level of all used Poisons by  (0.5 per point).
 * Reduces the severity of the crash effects for most drugs.

As with all other skills, Alchemy can be checked during conversations and scripted interactions.

Power level
Each power level in potions, drugs, and poisons has the following effect (where applicable):
 * +5% all durations, including over time effects.
 * +5% healing done (drugs and potions only).
 * +5% damage (poisons only).
 * +1 Accuracy
 * Half points (i.e. from poison power levels) are rounded down to nearest integer (truncated)
 * Excludes accuracy granted to self, accuracy bonus is to determine whether the attack lands on the attack target. Most potions and drugs don't use this (Potion of Ryngrim's Repulsive Visage seems to be the only one), but all poisons do.

At 10 Alchemy, the power level for drugs and potions would be 10, and for poisons 5 (excluding other potential power-level altering factors). At power level 10, drugs and potions gain +50% healing done, +50% duration. Note that power levels are rounded down to the nearest whole number, so a character with Alchemy 3 would add 1.5 power levels to used poisons, but the calculation will round this down to 1.

Initial bonuses
The following bonuses are applied as a result of a character's class and background.

Passive effects
unlimited – obtained during gameplay

Equipment
unlimited – bonus while equipped

Consumable items
unlimited – for the user for a duration (sometimes only in combat)