Poison at 1/4 HP
Originally posted by WindStruck
Poison wears off immediately when the player or mob reaches 1/4 HP. This is both not official behavior, and it also makes the status less effective. Keep in mind that the status also is supposed to lower the target's VIT defense. For players, it is sort of an exploit, as you could keep your HP low, let poison remove itself early, and then heal yourself after it has prematurely worn off.