Poisoned is a negative status effect and a battle mechanic that appears in Sonic Chronicles: The Dark Brotherhood.
In gameplay, when a target is inflicted with Poisoned, the player loses a percentage of Health Points each round. Targets inflicted with Poisoned is signified by green skulls and crossbones emitting from their body.
Poisoned can be inflicted on both playable characters and enemies when they are hit by certain attacks, such as POW moves or regular attacks (in the playable characters' case). It can be cured by Antidote or Cure All Spray.