Poison damages you for 1 HP every 1min 30s. Getting poisoned again resets the timer, it doesn't stack. Poison ends only when it has done all its damage, or if it is cured.

You can be poisoned by a Poison dart or a Fake gravestone.

Poison can be cured by: Anti poison, Healing healing, or God's Fruit

Immunity

• Protection sigil: fully immune
• Anti poison: no new poison while it lasts.
• Reality Shield: no new poison while you stand inside it.
• Sleeping in your own Sleeping Bag
• A Shield or a Safety bubble does not stop you from being poisoned, but blocks the poison damage
• A Mirror forcefield turns a Poison Dart or a fake gravestone back on the attacker.