Antifreeze poisoning refers to the common methods of poisoning which contains ethylene glycol. This compound is used as a radiator fluid for cooling up engines in automobiles. Like lethal poisoning of arsenic, antifreeze poison can also become fatal if not treated immediately.
The organic compound ethylene glycol is very sweet in taste and hence consuming the poison becomes easy for the person who wants to commit suicide. It can also be mixed with alcohol for killing the person.