Effects: Tawny Owl significantly increases Endurance regeneration; it is particularly valued by witchers who often use Signs in combat.

Preparation: The potion is made from ingredients providing one measure of vitriol and two measures of aether; strong alcohol must be used as a base.

Duration: Long

Toxicity: Medium

In preparation for an all-night vigil at the side of a cursed man, or before a battle which is certain to be prolonged, a witcher mixes a dose of Tawny Owl potion to boost his endurance.