An agent used against the venom of a snake, spider, or other venomous animal or insect.

An antiserum used to neutralize an animal or insect venom.

Drug (antitoxin) used to counteract the effects of venom from the bite of an insect, a snake, or other animal.

A substance containing purified antibodies used to neutralize the venom of a poisonous animal. Antivenin is a type of antiserum that comes from the serum of an animal that has been deliberately immunized against a particular venom. Antivenin is available to counteract animal bites from poisonous snakes, spiders, and scorpions.

A serum that contains antitoxin specific for an animal or insect venom. Antivenin is prepared from the sera of immunized animals.