Blizzard

Effects
Blizzard is one of the most powerful witchers' potions; it improves reflexes and reaction time, allowing a witcher to better parry and evade attacks.

Preparation
The potion is made by mixing ingredients providing two measures each of Vitriol and Rebis; strong, high quality alcohol must be used as a base.

Duration of effects
Brief.

Toxicity
Medium.

Source

 * The Book of Swallow