Theriacs is a term commonly used to refer to medicines or antidotes used to treat poisonous bites from snakes and other venomous creatures. Synonyms for theriacs may include antivenom, anti-toxoid, antidote, serum, and venom antiserum. These are substances that are specifically designed to counteract the effects of venom in the human body. These substances can also be used to treat other types of medical emergencies, including allergic reactions and other types of poisoning. Some of these substances may also be used prophylactically to prevent the onset of various types of illnesses and ailments. Regardless of their specific purpose, all theriacs are designed to save lives and mitigate the effects of various health issues.