antitoxin
/ˌæntɪˈtɑksɪn/Definitions
1. noun
A preparation used to counteract the effects of a toxin, especially in the case of a bacterial infection.
“The doctor administered an antitoxin to the patient to prevent further complications.”
2. noun
A substance produced by the body that counteracts the effects of a toxin.
“The immune system produces antitoxin to neutralize the toxin and prevent infection.”