Bezoar

Bezoar is an item only found in the jungle/underground jungle. It has a 1% chance to be dropped off of Hornets, Moss Hornets, Toxic Sludge and, strangely, it also drops from The Steampunker. This item grants invulnerability to the equipped player to any Poison debuffs.

Trivia

 * A bezoar is a lump of organic and inorganic mass trapped in the digestive system, historically believed to have antibiotical effects.
 * The Eagle Heart episode with the bezoar is awesome.