A
NetHack potion that, when
quaffed, increases your
energy (power) and maximum energy by 7 to 11 points (
blessed) or 2 to 6 points (
uncursed). The
cursed version
decreases your energy by 2 to 6 points, but will not drop it below zero. In all cases, your
Wisdom is excercised.
This potion is also one of the ingredients to make a potion of full healing. This potion has no effect when thrown at a monster or if the vapors are inhaled.