If the stat stages of any of the holder's stats are negative, it consumes the White Herb and all negative stat stages are reset to be neutral.
If a multi-strike move activates Tangling Hair, Gooey, or Weak Armor, a Pokémon will not consume the White Herb until after the final strike. If a Pokémon holding a White Herb activates multiple Pokémon's Tangling Hair or Gooey, it will not consume its White Herb until all of the Abilities have activated for that attack.
If a Pokémon with Weak Armor is hit by Knock Off, Thief, Covet, or a physical move from a Pokémon with Magician, its held White Herb will be knocked off or stolen before it has a chance to activate. If a Pokémon with Weak Armor is hit by Fling using a White Herb, the White Herb's effect will be applied before Weak Armor lowers its Defense. If a Pokémon uses a contact move that lowers its own stats (such as Superpower) on a Pokémon with Pickpocket, its held White Herb will be stolen before it has a chance to activate.
If the Pokémon with Defiant or Competitive is holding a White Herb, Defiant or Competitive will trigger before the White Herb, so the user will receive the Attack or Special Attack boost and then the lowered stat will be restored; if the same stat boosted by the Ability is lowered, the White Herb never has a chance to activate.
If a Pokémon with Contrary has one of its stats lowered by an O-Power, its held White Herb will not be activated until after a Pokémon uses a move.