The treatment of curing like with like dates back to the time of Hippocrates. The same principle has been developed in the form of Homeopathy over 200 years ago.
Homeopathy was discovered by a German doctor in 1779, called Samuel Hahnemann.
He became disillusioned with the crude practices on offer with the medical system of that time, (using purgatives, blood-letting and poisons such has arsenic), and looked for a way to reduce the damaging side effects of such treatments.
It was whilst translating a paper into German by William Cullen on “a treatise of the material medical” that he was drawn to a passage relating to the use of cinchona bark to treat cases of malaria.
He decided to experiment on himself using cinchona bark and found that by taking the substance he started to develop symptoms identical to malaria. He concluded from his experiment that if a substance could produce symptoms of a disease in a healthy person then that same substance could produce a cure of the like disease.