- This singular potion affects the witcher's skeleton, hardening bones and strengthening tendons. Each time the witcher parries an opponent's blow while under the potion's influence, he loses less Vigor than he would had he not consumed a dose of Tiara.
- The catch, however, is that stronger bones and joints denote stiffer limbs and weaker soft tissue. The witcher strikes with less confidence, so the sword damage he deals is reduced. His Vitality also declines.
- Potion causes serious intoxication when imbibed.
- This potion is recommended for witchers who rely more heavily on their swords than on magic, and before fights against monsters that employ strong attacks which must be parried.