Homeopathy is a holistic system of medicine developed by German physician and chemist, Dr. Samuel Hahnemann (1755-1843), based on the principle of "like cures like".
Hahnemann found that many substances, when administered to healthy people, could produce symptoms similar to those experienced by sick people. He also found that illnesses could be cured by using small, specially prepared doses of these substances, if prescribed on the basis of similarity of symptoms.
In the last 200 years the clinical effectiveness of homeopathy has been clearly demonstrated and today homeopathy is used worldwide.