Antidote is a term that refers to a medicine or treatment to counteract the effects of a poison or disease. Some synonyms for the word include countermeasure, remedy, curative, panacea, cure-all, and therapy. Countermeasure denotes a defensive reaction taken against an attack or threat. Remedy is another synonym which refers to a cure for an ailment or disease. Curative implies a healing process to restore health. Panacea is a remedy that is believed to cure all diseases or problems. Cure-all is a similar term that implies a remedy that can cure everything. Therapy is a more specific term that refers to the treatment of an illness or medical condition.