In NetHack, this potion will add 1 to a randomly selected ability score when quaffed. The blessed potion will add 1 to all ability scores, up to your racial maximums. Note that this potion is ineffective if you are wearing a ring of sustain ability, and cannot increase Intelligence or Wisdom if you are wearing a dunce cap.

The cursed potion tastes terrible, but otherwise has no effect.

If thrown, the target is restored to maximum hit points, as per a potion of extra healing. If the vapors are inhaled, 1 point is restored (that is, you only gain it if you lost at least one point earlier) to all (blessed) or a single (uncursed) ability score.