Isopathy is a term used to refer to a form of alternative medicine based on using substances that are similar to the disease in order to cure it. There are several synonyms for the word isopathy, including: homeopathic immunotherapy, homotoxicology, nosode therapy, and isopathic therapy. Homeopathic immunotherapy is a form of alternative medicine that uses diluted preparations of plant, animal, or mineral substances to stimulate the body's immune system to heal itself. Homotoxicology is a form of isopathy that uses homeopathic remedies to address the toxic effects of chemicals and other environmental toxins on the body. Nosode therapy is a form of isopathy that uses dilutions of infectious agents to help the body build immunity to those pathogens.