Potions of Power raise the hitpoints, THAC0 and thieving ability by +20% of the base number. This potion is a like a more powerful Potion of Heroism and a normal Potion of Perception combined. The effects lasts 4 turns. It's an expensive potion. This item appears in Baldur's Gate, Baldur's Gate: Enhanced Edition and Baldur's Gate II. In Baldur's Gate II it can be bought from the cutpurse on the Athkatla Bridge and from the Trademeet merchant in the red tent.
In-game description
| “ | This powerful elixir is similar to the potion of heroism in that it effectively raises the embibers level and it can be used by all character classes. This affects hit points, THACO and thieving abilities although it does not raise the backstab multiplier. This effect is applied to the base, before any attribute modifiers are added. | ” |