This is a therapeutic method which is based on the treatment of disease by means of the agent that can provoke it and that uses treatments with organic origin preparations such as plant and animal tissues or human secretions.

Thus Isotherapy or Isopathy is intended as a therapeutic method based on the administration of high dilutions of substances capable of dilution coming from the patients themselves or from their environment and which are or appear to be closely or partially related to the disease being treated.

The term Isotherapy derives from the Greek word isos, identical, and is based on the principle: “Aequalia aequalibus curentur” or law of identity.

Isotherapy was born long before homeopathy, traces were already found in ancient Chinese prescriptions. In 3rd-century BC Greek civilization, Hippocrates names it  in his writings and it is then mentioned in the works by German philosopher and naturalist doctor Theophrastus Bombast fon Hohenheim, better known as Paracelsus (1493-1542) as well as other Renaissance authors.

Isotherapy is mentioned in the latest editions of the Organon of Medicine by Hahnemann and uses unitary homeopathic remedies derived from substances that caused the pathological state. Wilhelm Lux observed that by applying the technique of dilution and homeopathic potentiation an organic derivative of infection (bacteria, viruses, excretions or secretions of infected organic material), the latter acquires a therapeutic effect on the disease resulting from infection.