Effects: Greatly increases damage inflicted on opponents, but makes dodging and parrying impossible.

Preparation: The potion is made by mixing ingredients providing one measure each of vitriol, hydragenum and rebis, and two measures of vermilion; strong, top quality alcohol must be used as a base.

Duration: Long

Toxicity: High

Witchers take this potion before fighting strong, heavily armored opponents. Imbibing Thunderbolt causes witchers to enter into a battle trance. While in this state, witchers attack more efficiently and cause greater damage, while at the same time neglecting their own defense and becoming an easier target.