noun
antidote
AN-tih-doht/ˈæntidəʊt/
A treatment that counteracts a harmful substance.
The clinician gives an antidote to counteract the snake's venom.

Etymology
An antidote was literally something “given against”: a drug administered against poison. That counteracting role also explains its use for a remedy against other harmful effects.
In context
naloxone for an antidote for that and you've probably heard a lot about the opioid issues that we have here in the u.s and narcan that's another name for this we can give that to reverse the effects
More examples
- The laboratory investigates an antidote for the toxic substance.
- For her, gardening is an antidote to office stress.
- The funny story provides an antidote to the room's gloomy mood.
Forms
antidote · antidotes
Similar words
- remedy
- Broader; can address problems unrelated to poison.
- antivenom
- Specifically counteracts venom rather than every harmful substance.