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Acid is a corrosive threat to you, your pet, your metal weapons and armor and your enemies. It can come from monsters, comestibles, potions of acid ("This burns!"), and perhaps other sources.

The following monsters are acidic:

Eating an acidic corpses does 1d15 damage unless you are acid resistant.[1]

Drinking a potion of acid does 1-16 points of damage also if not acid resistant.

Acid resistance is granted by being polymorphed into an acidic monster or by wearing an alchemy smock, yellow dragon scale mail, or yellow dragon scales; it cannot be intrinsically granted.


  1. Source:Eat.c#line1288