antidote poison

Antidote is drug or other remedy that counteracts the effects of a poison. It may neutralize the poison chemically, as bicarbonate taken as an antidote for acid; it may render the poison insoluble and therefore harmless, as Epsom salt as an antidote for lead; it may absorb the poison, as charcoal as an antidote for alkaloids; or it may coat the stomach, as olive oil as an antidote for ammonia poisoning. - antidote