3 units
Cold and/or Fire damage inflicted upon the wearer is reduced by 2 points per attack
After drinking this potion, the imbiber immediately belches forth a green cloud which deals 3 points of Poison damage to all monsters in the room. This damage is not subject to any kind of damage bonus the user may possess.
The drinking and damage-dealing both occur as part of a single action. So if the consumer drinks this potion as a Free Action (e.g., by using a Pouch of Tulz or Belt of Retrieval),
Grants 3 points of Cold-based Retribution Damage to the imbiber.
Retribution Damage: When a melee attack deals damage to a target possessing Retribution Damage (RD), the attacker takes damage equal to the target’s total RD. Ranged attacks, whether physical or magical, do not trigger RD. If an attack would have caused damage but is completely negated (e.g., Cloak of Shadowskin) or the attack’s damage is reduced to zero (e.g., melee damage reduction),
Heals 3 points of damage and removes the Poisoned condition. It does not restore HP lost due to Poison damage, but will stop continuous Poison-based damage that was in effect when the potion was consumed. It does not inoculate the drinker against further Poisoning.
Poison can deal HP damage (though not always), but if you fail a saving throw for Poison, under certain conditions, there may be repercussions. Simply taking Poison damage won’t trigger this condition.