Poison

When you are exposed to poison, you are required to make a saving throw (usually fortitude) vs. the poison's difficulty class. Your character will have a modifier to this saving throw that is derived from your class levels, and your race- and is potentially modified by what enhancements and feats you have taken, as well as whatever buffs have been cast on you, and what equipment you are wearing.

Poisons are either natural, magical, or supernatural.

Sources of resistance/immunity to poison

 * Dwarf race (+2 bonus and enhancements to increase it)
 * Warforged race (immune to natural poisons, except those that specifically affect wood or metal; +10 Racial bonus to saves against magical poisons and do not automatically fail on a natural 1)
 * Proof Against Poison item enhancement (immunity to natural poisons; bonus to save against magical poison and do not automatically fail on a natural 1)
 * Poison save item enhancement
 * Neutralize Poison spell (dispels poison; existing damage is not healed; grants immunity against natural and magical poisons for a duration)

Poison typed damage
Poisons that are not classified as natural, magical, or supernatural and only do poison typed damage instead of ability score damage.
 * Poison weapon enchantment
 * Found on: Player character weapons
 * Green Dragon Poison: "This powerful and magical poison of the dragon attacks your body." Can stack multiple times, damage over time effect.
 * Dealt by: Green Dragons
 * Drow Weapon Poison: Can stack multiple times, damage over time effect.
 * Dealt by: Drow Elves in the Forgotten Realms
 * Purple Worm Tail Venom: "This underdark creature has a powerful poison!" Can stack multiple times, damage over time effect.
 * Dealt by: Purple Worms

Natural Poisons

 * Greenblood Oil: You have been poisoned by greenblood oil and may soon suffer additional Constitution damage.
 * Dealt by: Bearded Devils
 * Hulrak Slime Mold: You have been poisoned by a mind-altering toxin and may soon suffer additional Wisdom, Intelligence, and Charisma damage.
 * Dealt by: Clambie, Hambie
 * Scorpion: You have been poisoned by a scorpion and may soon suffer additional Consitution damage.
 * Dealt by: Scorpions
 * Spider: You have been poisoned by a spider and may soon suffer additional Strength and Dexterity damage.
 * Dealt by: Spiders
 * Yuan-ti: You have been poisoned by a yuan-ti and may soon suffer additional Constitution damage.
 * Dealt by: Yuan-ti

Magical Poisons

 * Arcanaloth: You have been poisoned by an arcanaloth and may soon suffer additional Strength damage.
 * Dealt by: Arcanaloths
 * Fire Reaver: You have been poisoned by a firereaver and may soon suffer additional Strength damage.
 * Dealt by: Fire Reavers
 * Flesh Render: You have been poisoned by a fleshrender and may soon suffer additional Constitution damage.
 * Dealt by: Flesh Renders
 * Iron Golem: You have been poisoned by an irongolem and may soon suffer additional Constitution damage.
 * Dealt by: Iron Golems
 * Medusa Snake Venom: You have been poisoned by the snake bite of a Medusa and may soon die. Deals Constitution damage.
 * Dealt by: Medusae
 * Phase Spider: You have been poisoned by a phase spider and may soon suffer additional Constitution damage.
 * Dealt by: Phase Spiders
 * Poison (spell): You are infected with venomous poison and may soon suffer additional Constitution damage.
 * Poison Tears: You have been poisoned by Poison Tears and may soon suffer additional Constitution damage.
 * Dealt by: Wheeps
 * Spider: You have been poisoned by a spider and may soon suffer additional Strength and Dexterity damage.
 * Dealt by: Spiders, Driders

Supernatural Poisons

 * Strong Spider Demon Venom: This spider's poison is a force of pure evil and uneffected by normal remedies. It's slow but lethal.
 * Dealt by: The Spinner of Shadows
 * Pit Fiend Venom: You have been poisoned by a pit fiend and may soon die.
 * Dealt by: Pit Fiends
 * Weak Spider Demon Venom: This spider's poison is a force of pure evil and uneffected by normal remedies. It's slow but lethal.
 * Dealt by: Flame Eater, Bloated Flame Eater