antidote
Definitions
A medicine taken or given to counteract a particular poison.
A substance, remedy, or action that counteracts something unpleasant or harmful.
Examples
Laughter is often the best antidote to a stressful day at work.
The explorer carried an antidote in case he was bitten by a venomous snake.
Synonyms
remedy cure counteragent neutralizer antitoxin corrective antivenin